Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b1562e0efd99f1…

MALICIOUS

PDF

73.0 KB Created: 2021-06-03 12:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 365d660cf3b8e5eb09c596bbbdea44bd SHA-1: 748c6ab64768dd50bc4b2d3d01bfcee0954b36fb SHA-256: 19b1562e0efd99f1492795d581c110677595951dcb55b26fb2d195fd5a9a4da9
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 0.9998

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://pixomot.ru/pbw?utm_term=animal+developmental+biology+book+pdf PDF link annotation
    • https://wivewuti.weebly.com/uploads/1/3/4/6/134698804/jemuvoririre-nolifikidopovu-vorajod.pdfIn PDF document text
    • https://babulavired.weebly.com/uploads/1/3/0/7/130775389/9ae3867bb.pdfIn PDF document text
    • https://sezifiloxoxo.weebly.com/uploads/1/3/5/3/135348424/vitivenusodatiwom.pdfIn PDF document text
    • https://figejarorosuwe.weebly.com/uploads/1/3/4/4/134433037/lanuxopewogifu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poxanoralanu.pbworks.com/w/file/fetch/144426870/79816565161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ffb497d-ac63-4a73-9be2-5f6580ea49de/backstage_handbook_free.pdfIn PDF document text
    • http://wevapejatu.pbworks.com/w/file/fetch/144538197/gta_sa_cleo_mods_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd99c1c5-b0b6-484c-be91-8c1ce577c9f5/bobuxojipop.pdfIn PDF document text
    • http://pezaloribed.pbworks.com/f/93777373645.pdfIn PDF document text
    • http://sekodegaxex.pbworks.com/f/flowering_and_non_flowering_plants_for_grade_3.pdfIn PDF document text
    • http://mumubib.pbworks.com/f/96281506542.pdfIn PDF document text
    • http://pinurakus.pbworks.com/w/file/fetch/144549228/pizalobulizere.pdfIn PDF document text
    • http://gitixofipoxu.pbworks.com/f/29263661149.pdfIn PDF document text
    • http://nolumemonip.pbworks.com/w/file/fetch/144506508/gunekodukep.pdfIn PDF document text
    • http://xovakovawup.pbworks.com/w/file/fetch/144522126/widodugukerazujasokalas.pdfIn PDF document text
    • http://lulatigono.pbworks.com/f/vewafinegudotenuleruge.pdfIn PDF document text
    • http://pusavivo.pbworks.com/w/file/fetch/144461616/engineering_mechanics_dynamics_7th_edition_j.l_meriam_l.g._kraige.pdfIn PDF document text
    • http://zekodunu.pbworks.com/w/file/fetch/144467364/slumdog_millionaire_full_movie_download_hd_in_hindi.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_off0000e0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A2 5440 bytes
SHA-256: 1e6e3e883a92b7af87dd79369addb61aa7d8e0b88cd60b1a703de90e3e57bbfa
font_01_sfnt_off0000f325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF325 10320 bytes
SHA-256: 056fe78b0ae4f3e5966650ee18de702ac2ef91d417ac39cf8f312d91023610ab

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