Malicious PDF — malware analysis report

Static analysis result for SHA-256 e560a570176d5995…

MALICIOUS

PDF

87.4 KB Created: 2021-03-31 00:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9aa543dd3371006e532924fdeec7f3f2 SHA-1: ea4189cd855e11a13218bf21a02b56145972e14b SHA-256: e560a570176d5995726b0f022687729400607a2019d4af9aa9a6e0cb69cd2b88
126 Risk Score

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 0.9998

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://botokaw.ru/123?utm_term=foxit+mobile+pdf+apk PDF link annotation
    • https://cdn.sqhk.co/wabogojo/fL7EqPD/homeschool_subject_planner_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/iYbB1Oo/true_surf_game.pdfIn PDF document text
    • http://justiciaforjustice.com/rexax3953q.pdfIn PDF document text
    • http://adanakebap.org/99101999027qqkny.pdfIn PDF document text
    • http://slampochka.ru/tidofedigofisijezb3if.pdfIn PDF document text
    • http://xufikefizot.sportsontheweb.net/buwazilejumipewevunizuwo.pdfIn PDF document text
    • http://lerob.info/baby_bjorn_bassinet_age_limitwwfdr.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/2020_buick_lacrosse_brochure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/brother_tn_420_replace_toner_error.pdfIn PDF document text
    • https://245df057-3761-468b-8bc4-2c9c6734f7c7.filesusr.com/ugd/06c8e1_4ab39e55e19f4d4db41736815c44cddd.pdf?index=trueIn PDF document text
    • https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_d0a261b4230c43ada3c5a6085dd69c69.pdf?index=trueIn PDF document text
    • http://zugepoguj.onlinewebshop.net/3809888820.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/36155242438.pdfIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_3529b0aa8d3843a78fb27a3aec789457.pdf?index=trueIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_e410e486e63b4961821edbba01a51c39.pdf?index=trueIn PDF document text
    • http://vidugozu.atwebpages.com/what_is_the_importance_of_art_in_the_philippines.pdfIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_3b4c7fef81b140de9548d1385b662ba7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupimaral/chogada_tara_song_mr_jatt_mp4.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E3 5140 bytes
SHA-256: 896787a01ae29e48dcf7c8bf1ff4725ee7a1debaf38bda11555db3ee5b3896c8
font_01_sfnt_off00010956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10956 21544 bytes
SHA-256: c44a23249337c7b6fd132fb091d43f657136d441a03f92d89a5856572e9bacef
font_02_sfnt_off00013946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13946 16160 bytes
SHA-256: b91ebbfc40a94f10b2fcfc4d08542e4cd4fc38dcff43bcfefe5d572695fcce17

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