Malicious PDF — malware analysis report

Static analysis result for SHA-256 24bc0c47a587bdca…

MALICIOUS

PDF

78.2 KB Created: 2021-04-06 02:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 25f2937d44f43ac6aa856756eea52a46 SHA-1: c3c63ca50c3cdc4f5dbda62504333fe2fa229e5b SHA-256: 24bc0c47a587bdca9b5e8be438eaa0f1ff970047db2fa09a9ea5c0b435a9569e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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://fokemale.ru/aws?utm_term=cyberpunk+2077+update+ps4+size PDF link annotation
    • https://lopodudox.weebly.com/uploads/1/3/4/3/134339354/526713.pdfIn PDF document text
    • https://puzepoxa.weebly.com/uploads/1/3/4/3/134318678/sagijeviweba-dekovej-levapa-xalidewag.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/f150fbbef5f24c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450506/normal_602125ca4b3e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381738/normal_60053d7ee6cf2.pdfIn PDF document text
    • http://ifeelgood.club/siemens_plc_s7-400_manual9fzc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_602d2d974d200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406785/normal_604e70220d560.pdfIn PDF document text
    • https://seniwotod.weebly.com/uploads/1/3/5/3/135346371/1605f19.pdfIn PDF document text
    • https://litemavokof.weebly.com/uploads/1/3/1/8/131871991/7909ad09b.pdfIn PDF document text
    • http://instapresent.site/bee_factory_cheat_download9gbf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367275/normal_5fccd19993e0b.pdfIn PDF document text
    • http://losinglotterynumbers.com/18987320871tcklv.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/nezuj.pdfIn PDF document text
    • http://batmbatm.ru/john_deere_190c_pricefty5y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416514/normal_605a3b133001c.pdfIn PDF document text
    • http://esclub.pro/kifaromeluvifutitagoromopcdabt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409255/normal_5fcc1a87813a7.pdfIn PDF document text
    • https://pudewufaziv.weebly.com/uploads/1/3/0/7/130739775/9851632.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/mejawiwomak/vegetarian_recipes_for_weight_loss.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/wulovut.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_off0000f383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF383 5624 bytes
SHA-256: 3d6b798bbf4df9ae3f96428beb418f9526524115020cf900053eed95c92ab5c2
font_01_sfnt_off000106c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C4 11124 bytes
SHA-256: 6b6f927cc4bcde13ebeb30416332c40a26d5ca811d26ce7b207a866e5e7fee8a

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