Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa60d79e95ededa…

MALICIOUS

PDF

76.7 KB Created: 2021-03-21 00:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ad8886dc243378d933057cc16ab3c44e SHA-1: 17918e0f4a7b338bcabfc27456adf101962d002d SHA-256: 0aa60d79e95ededa5fefca481d700e9f6f3b4eafddf8223f6abd119b659a77ac
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 0.9991

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://dugedepap.ru/123?utm_term=alternating+current+circuit+theory+pdf PDF link annotation
    • http://oneplusonemain.xyz/unitypoint_urgent_care_des_moines_hours7xwpd.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/Ugghgha/bedaginolusirivev.pdfIn PDF document text
    • http://micrometer25bill.site/xipejopenodibotaa05ja.pdfIn PDF document text
    • https://baduravimu.weebly.com/uploads/1/3/4/7/134713966/1289505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421365/normal_5feed470100c1.pdfIn PDF document text
    • https://faranopiz.weebly.com/uploads/1/3/5/3/135332407/b7d23f1a.pdfIn PDF document text
    • http://voirly.xyz/toniweriremizoxesuverr40yz.pdfIn PDF document text
    • https://cdn.sqhk.co/muditazu/Ajcjcgh/97909748969.pdfIn PDF document text
    • https://zezawimikosalef.weebly.com/uploads/1/3/5/3/135329884/0ffd86b70bea99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_601a6336cbbfe.pdfIn PDF document text
    • https://cdn.sqhk.co/xetasenuwoji/ghdhgjj/76787196617.pdfIn PDF document text
    • https://bomitepoz.weebly.com/uploads/1/3/4/8/134895739/regakerezeliw-roroveguto-bopotapet-memutul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5fe21beb83e80.pdfIn PDF document text
    • https://fetazudumaveber.weebly.com/uploads/1/3/4/6/134615608/2886678.pdfIn PDF document text
    • http://mavpa.fun/calendar_template_2019_printablewb4nf.pdfIn PDF document text
    • http://silvanozito.online/golf_on_marsxfzk7.pdfIn PDF document text
    • https://cdn.sqhk.co/kedetofido/gjhhicW/how_many_free_kick_goals_did_ronaldo_score.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joxumokuri.epizy.com/hard_algebra_problems_with_answers.pdfIn PDF document text
    • http://sidinikoxa.epizy.com/vosizofanuwilir.pdfIn PDF document text
    • http://dejedizanabi.epizy.com/more_scary_stories_to_tell_in_the_dark.pdfIn PDF document text
    • http://rarisirifamawod.rf.gd/scarra_champion_item_cheat_sheet.pdfIn PDF document text
    • https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_46fa7e1d35494c938542f5aac7735469.pdf?index=trueIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_ec1ec414487644a8a2d8bb20275c7e64.pdf?index=trueIn PDF document text
    • http://jebimotanuz.rf.gd/huawei_mate_10_pro_android_9_australia.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_off0000ee75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE75 5332 bytes
SHA-256: 2be8915f525d7c5cbb4b75deca3bbfb2a36b4c8722a09b8fdc8cd0da2c195cd8
font_01_sfnt_off0001009d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009D 10676 bytes
SHA-256: 024d6931981975387bf91ebf975cb429a263385d5c0ee2f735c71ec390c1592a

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