Malicious PDF — malware analysis report

Static analysis result for SHA-256 49308b72201a578d…

MALICIOUS

PDF

80.0 KB Created: 2021-04-26 12:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1201045b7856aff205b8edbc2ff4f033 SHA-1: 5318fbcbeaa1631ef9bc5c6bbf11913a367e84ac SHA-256: 49308b72201a578d689628a80808d95a558facd1b8487c9e3b5ed46b35dfabe6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/strik?utm_term=interior+design+styles+8+popular+types+explained PDF link annotation
    • http://xiruzox.mygamesonline.org/envisioning_information_tufte.pdfIn PDF document text
    • http://presentinsta.online/whatsapp_status_images_in_punjabi48epe.pdfIn PDF document text
    • http://mupifojoxur.medianewsonline.com/37033602235.pdfIn PDF document text
    • http://kyhni.site/low_blood_pressure_range_pregnancyqylqh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424349/normal_604b5378c15ed.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/97512043171.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/54196858208.pdfIn PDF document text
    • http://tryadasert.online/can_acca_get_job_in_indiapk2yb.pdfIn PDF document text
    • http://fopokigife.mywebcommunity.org/94062213903.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_5ff0b2a1b5bbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_60405266639a3.pdfIn PDF document text
    • http://ersoil.fun/poxipifolovvvdkp.pdfIn PDF document text
    • http://bigtittybella.com/22762628769d5z59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403688/normal_5fc71384d9ffd.pdfIn PDF document text
    • http://glawerry.online/easy_way_to_stop_smoking_allen_carr_videoh344w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d0c6d30-55b9-4b7f-8145-34d11b484ddf.filesusr.com/ugd/8db56d_8ca1d0a2053b49e2a76d096d5c8c0e63.pdf?index=trueIn PDF document text
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_bf4fb048ccac4934be0859454b1e6fef.pdf?index=trueIn PDF document text
    • http://jixuwir.rf.gd/catalytic_converter_function.pdfIn PDF document text
    • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_cafdb81f7fe546018c3c712c11186796.pdf?index=trueIn PDF document text
    • https://df256b98-640c-444d-885a-8195c7360722.filesusr.com/ugd/40b9e6_985cba65ee4a4b64b5fd674e32cf9393.pdf?index=trueIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_8bc6f9d2b3c847d586577101873aaf69.pdf?index=trueIn PDF document text
    • http://kotasivira.rf.gd/nesosetur.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://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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70D 5428 bytes
SHA-256: 738893d2b2ad86fc70c43f6f8a9cdf3948304883e2c03fbd67a6e9f6d0b7b40d
font_01_sfnt_off0001099a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099A 12340 bytes
SHA-256: 27b8e502216f3296916dab7ebfa28e2901501afa1ac61c21c4cefc8033989422

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