Malicious PDF — malware analysis report

Static analysis result for SHA-256 770498887e9e90fe…

MALICIOUS

PDF

181.3 KB Created: 2021-03-16 18:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52b5f9ba96fed3c68e79fe5f3f12cf96 SHA-1: 970b3e1a4dd1d853b62173f4440871075f06c40f SHA-256: 770498887e9e90fe87a77de2218055fa12d477d267715672ce7841af3a199ec9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a network of links on potentially malicious or low-reputation hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9628

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/wix?keyword=langmuir+circulation+%25E4%25B8%25AD%25E6%2596%2587 PDF link annotation
    • http://pasetbs.xyz/442134185276l4q6.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/what_is_the_lowest_tint_you_can_get_in_florida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470985/normal_601002cdd451c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498324/normal_5fc7faca4711c.pdfIn PDF document text
    • http://inglassrus.ru/parmenides_theory_of_realitybp8jy.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/diporavedokidejabu.pdfIn PDF document text
    • http://7gusevshop.space/ice_cream_runtzjnqn5.pdfIn PDF document text
    • http://gozatelaji.22web.org/geweniniwixajivexov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_60462b9ccdca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409628/normal_6016101f3ab64.pdfIn PDF document text
    • http://checkmyscore.info/56950436455czg3k.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/17a41752a44c3ed.pdfIn PDF document text
    • http://visanekis.iblogger.org/siwexobesirabidalebabop.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/8088039095.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/how_to_make_your_own_soda_machine.pdfIn PDF document text
    • http://creditinquiry.info/simple_sample_treasurers_reportmv3cm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fec0a46cf4b2.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/46648162293.pdfIn PDF document text
    • https://tiwudusakuwizir.weebly.com/uploads/1/3/1/6/131637104/tobuvosewon.pdfIn PDF document text
    • http://jabekigufu.22web.org/golds_gym_trainer_420_belt_adjustment.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/215f7e82-d0b2-477c-b1f0-8d9e90594fde/gomujefifewozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9eb9c32-ca56-46a1-99ce-9b85cbbb0248/2017_lexus_rx_350_f_sport_price_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd41d15-42b2-496e-958f-6b5a64ecb034/how_to_build_a_death_star_in_minecraft_easy.pdfIn PDF document text
    • http://gapitufukiwiti.epizy.com/dagannoth_slayer_guide_rs3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/481736ad-0f49-4b51-b303-bed3145c377e/gta_v_3dm_crack_v4_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e662ca3-d555-462c-b044-cc3cc5e59c3b/temutagigojafekazisipak.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://faculty.gvsu.edu/videticp/langmuir.htmIn PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12606 105700 bytes
SHA-256: b3b5640c18b64875edf3cbbbe1ac399a323f28ce6029db8df94a3370166fac7e
font_01_sfnt_off00025acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25ACF 3112 bytes
SHA-256: 31a7c526988a7be2ccd0a44e21e48c33e90714b14e453b0dad9e2e322c4d8857
font_02_sfnt_off000265d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x265D4 4648 bytes
SHA-256: f69ff1bc534084a9689f7c081ac804599e3fbcc03d7c56adfb85b80a9fcc1751
font_03_sfnt_off00027577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27577 12456 bytes
SHA-256: fe9e9831efb5d00d4745d96a336ced6a274130771e91c808e644fa4b8ab568c6
font_04_sfnt_off0002a063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A063 16336 bytes
SHA-256: bf5920f6536557082646c141d9747a53291bccf71937d223b8450c3d801b07b7
font_05_sfnt_off0002b634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B634 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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