Malicious PDF — malware analysis report

Static analysis result for SHA-256 30eb3ccbd1250fd6…

MALICIOUS

PDF

70.1 KB Created: 2021-03-22 20:28:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8862415b406f47cd729ca86a25716af0 SHA-1: 11c23fc65f017c1711471ed7972e3e59f6ee44b7 SHA-256: 30eb3ccbd1250fd615c32397336d31046e76d7607a4893f6a64261aac6ade0d9
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 0.9996

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://golowaki.ru/wix?keyword=jamex+6557+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383800/normal_6051e02aca6da.pdfIn PDF document text
    • http://zathkatow.xyz/vonirozifupikeraso8b20d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_5fe725e381b2d.pdfIn PDF document text
    • http://nebofonuve.mywebcommunity.org/pumurugovefuwivelififikox.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/71573622160.pdfIn PDF document text
    • http://russianpatentexpert.com/what_are_some_examples_of_gravity_and_friction32kf7.pdfIn PDF document text
    • http://vesajob.getenjoyment.net/norejibejolegosepijopa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406466/normal_5fc7433682f80.pdfIn PDF document text
    • http://naturmilans.fun/ge_dryer_f70_codeo35dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481064/normal_5fd7987f731ca.pdfIn PDF document text
    • http://fomoregekamikat.mypressonline.com/pokevijofagelupagin.pdfIn PDF document text
    • http://bometaximom.scienceontheweb.net/what_does_the_bible_say_about_being_single_for_life.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/88275423161.pdfIn PDF document text
    • http://tdsevsvet.ru/eldritch_horror_investigator_sheetabl6f.pdfIn PDF document text
    • http://fitnesspack.net/dewalt_black_and_gold_drill_bits_vs_black_oxide6kteg.pdfIn PDF document text
    • http://numulul.mygamesonline.org/vilugefusetakexodugizukix.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/42853644955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497356/normal_6024c48bb21f4.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/jirebonudur/gilisijotivez.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/71139873510.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/buick_encore_reviews_2017_consumer_reports.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD445 4972 bytes
SHA-256: 19010a37d171965457906ec4f006e205c27b5a5134946a3f6457cd1c5ef456b9
font_01_sfnt_off0000e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 10660 bytes
SHA-256: 39a88fef70ed0ee4739ceeb91234e10b4925742c182b6c8c675a055b902f7a3e

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