Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fe6dd0a506ef7b…

MALICIOUS

PDF

75.7 KB Created: 2021-04-20 16:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 58556287ee66104d32203043f9092208 SHA-1: 228f90554ccd5d216532bfae4efc1401d8b06413 SHA-256: 34fe6dd0a506ef7befd41018317df920ef2f79db90af328c8eb4707a94f9c1a7
156 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which are to unknown or potentially malicious domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains a title that appears to be a lure. No scripts were extracted, but the PDF structure itself facilitates the redirection to these external URLs.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/strik?utm_term=can+i+use+my+iphone+7+as+a+tv+remote PDF link annotation
    • https://vajigapevinukaz.weebly.com/uploads/1/3/4/5/134578345/soxosujolan_rafamifub_borexegegora_jemanitujilemix.pdfIn PDF document text
    • http://korsabarca.com/megan_rapinoe_wifeo2q42.pdfIn PDF document text
    • http://amandeepsadyora.com/1061710338271aku.pdfIn PDF document text
    • https://sinezotuze.weebly.com/uploads/1/3/0/9/130969777/1379174.pdfIn PDF document text
    • http://indir-kazan.com/corporate_counsel_resume_template18egh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492897/normal_60164f9ac487e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_604aef6bc8998.pdfIn PDF document text
    • https://fafemuwupid.weebly.com/uploads/1/3/4/3/134368635/4089869.pdfIn PDF document text
    • https://nanarimedut.weebly.com/uploads/1/3/2/6/132695535/xopave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455180/normal_60086ad78638e.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/zosokinapori-geredusapuj-tepiwuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5fd1cde42034d.pdfIn PDF document text
    • http://metazoaapc.fun/how_to_start_think_smarterocz6u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_602aa4c88cf45.pdfIn PDF document text
    • http://gachihyper.xyz/sony_crackle_tv_guidelpm0h.pdfIn PDF document text
    • https://mogufujekomepit.weebly.com/uploads/1/3/1/6/131607600/8ef4afac95bacc.pdfIn PDF document text
    • https://xopekasas.weebly.com/uploads/1/3/4/7/134748476/d562aa6a4.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/jipowumat/35269548856.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/mamim.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/what_does_a_baby_boy_mean_in_a_dream.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/2013_mustang_gt_auto_vs_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/86504071788.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/60056824756.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/collateral_beauty_movie_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/jovixukebiwab.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_off0000e81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81F 5176 bytes
SHA-256: 317be3468c29b9113de37395c9ca59c5dc36c04a82732ab31dceb02d8eee1307
font_01_sfnt_off0000f9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A1 11092 bytes
SHA-256: 8fdb45b884dc182ac7b90cee729cc17a65ae7b10d01d7826e82f10b2bf65fcc6

Open this report in the interactive analyzer, or submit your own file for analysis.