Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69ceea26b6cd249…

MALICIOUS

PDF

94.6 KB Created: 2021-05-10 14:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bd705f09355d01a184f82837bc36d5d6 SHA-1: 2e33877b90d9374f5292e0eca03d3504bf9a3f38 SHA-256: f69ceea26b6cd2497c91f23903dbcd01f98b08804528a58916ffe9a3099f7246
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate an attempt to manipulate search engine results or direct users to malicious content. No scripts were extracted, but the nature of the links suggests a phishing or spamming campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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://pelibifir.ru/strik?utm_term=how+to+find+linear+speed+equation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485443/normal_600a847eea3a4.pdfIn PDF document text
    • https://cdn.sqhk.co/xinefegepe/tgirU0d/plunder_pirates_guide.pdfIn PDF document text
    • https://safubijob.weebly.com/uploads/1/3/2/6/132682970/7343929.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/xunolewo_xoxoji_laduxur.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/Ojfifhe/98449313258.pdfIn PDF document text
    • https://ridulimozujigo.weebly.com/uploads/1/3/4/1/134109280/defelufabukowenexa.pdfIn PDF document text
    • https://witokilufixag.weebly.com/uploads/1/3/4/7/134739393/9416021.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/5329865.pdfIn PDF document text
    • https://jebezowurexa.weebly.com/uploads/1/3/4/5/134576847/bavuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450427/normal_6049c1beacf1a.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/jeZihjf/betelagunexabizibofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497650/normal_601e0225a430e.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/4873559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_6056a3c50cd26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490273/normal_601690b668591.pdfIn PDF document text
    • https://dugumali.weebly.com/uploads/1/3/1/4/131437411/teduvuretelamom_xakap_kuremegesakig_xowuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b387b9ac-7fc5-402f-b460-18ed6dda7345/batman_death_in_the_family_2020_rotten_tomatoes.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/are_tracfone_smartphones_any_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9465b2c-1a94-4362-958c-1807ca51e796/countable_and_uncountable_nouns_esl_elementary.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/japan_guide_jr_pass_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70807976-a4d2-41c3-8838-b6eea78f7165/army_weapons_qualification_card_fillable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc931d43-cbdd-4fb5-9f19-e93af8697c39/podibosakumivixeno.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/engineering_mathematics_important_topics_for_gate_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/lirojak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c16d82-a858-4477-8688-29ab14c7381c/panasonic_kx-tes824_reset_password.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_off00012e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E6E 5212 bytes
SHA-256: 98fbd9900af8e18ca74b85d926b4c9392230ba91ef9c4e931bb91d3781efec46
font_01_sfnt_off00014049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14049 12504 bytes
SHA-256: 185f3915f0ab744456902b15d800d000704c2294e2643ad3d3ba7de6685955c3

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