Malicious PDF — malware analysis report

Static analysis result for SHA-256 325201529402ea5e…

MALICIOUS

PDF

79.9 KB Created: 2021-03-23 22:21:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a34c3d4359cdc2cfc80665b147d554d0 SHA-1: 55991a032900ee7846a5d77593a9759243af7e4b SHA-256: 325201529402ea5e3f6c1650e2daf4e24e98be28c0a09c3e282d43ab6b97a36d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, including one pointing to 'https://golowaki.ru/123?utm_term=barbie+makeup+game++free+apk', suggesting a lure to a malicious website. The PDF's structure and embedded links indicate it functions as a link farm, likely to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/123?utm_term=barbie+makeup+game++free+apk PDF link annotation
    • http://islta.fun/onn_portable_dvd_player_helplcv9z.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/Ajjhcij/beholder_2_lite_walkthrough.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456705/normal_6004dc4d17b7b.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/jbY4Bxe/kawaii_anime_girl_hairstyles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447084/normal_600049b94efdb.pdfIn PDF document text
    • http://rebelliona.online/how_to_get_management_skills_boost_pes_2020egvmk.pdfIn PDF document text
    • http://reduslimitalia-official.site/bojopuzituve05mb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477863/normal_5fdbc27f0fc9c.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/graphing_sine_and_cosine_functions_worksheetgo6jf.pdfIn PDF document text
    • http://ecoterritory.store/rorawifemolodetaziwp1a.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/hdDiDic/nightmare_foxy_skin_planet_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/gvhM8WD/pizixodarotatedizizopinas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magivaxinel.rf.gd/affairs_cloud_may_2020_current_affairs.pdfIn PDF document text
    • http://vonolukover.epizy.com/16909909934.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_492655979bb44e6fa4ec18ee983c06d3.pdf?index=trueIn PDF document text
    • http://viminug.epizy.com/how_to_set_up_penguin_bio_wheel_200.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/rorurubagosovokateduniw.pdfIn PDF document text
    • https://70745723-7f4a-4dc7-98be-95bdce43cd82.filesusr.com/ugd/67bae7_6d7aaaf3a8f84520a48a3a69e123b4bc.pdf?index=trueIn PDF document text
    • http://xibezesod.epizy.com/active_directory_federation_services_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/fansipan_trek_without_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE494 5264 bytes
SHA-256: e86a07741399fbeb5586d73ad15015c74245ac13d8ab52b02617e478120f33ab
font_01_sfnt_off0000f66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66F 11000 bytes
SHA-256: a0c1469291361daa772fae616cccdd81ffaa99bc55d0175ec061eb57bbda5792
font_02_sfnt_off00011c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1B 16392 bytes
SHA-256: 4fd8ce0a0bd469555a02c303bb9ce5733de29ec9beb10c576de77aa505f32037

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