Malicious PDF — malware analysis report

Static analysis result for SHA-256 2beb3a3610a94c4d…

MALICIOUS

PDF

89.8 KB Created: 2021-04-08 00:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ce52fad1e3e8e78c39ff1fb37a4e823a SHA-1: 92012d2432be6f6e83ac52a40905942f052fea1d SHA-256: 2beb3a3610a94c4def0737d6c10177d692823391753582f696650d777b601efe
226 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 0.9998

Heuristics 7

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://gimoguvi.ru/strik?utm_term=divergent+four+audiobook+free PDF link annotation
    • https://bejitukinerebi.weebly.com/uploads/1/3/4/8/134890105/35599584.pdfIn PDF document text
    • http://carinsusa.info/paxoxofezewelbjsco.pdfIn PDF document text
    • https://sawuwirepugasup.weebly.com/uploads/1/3/0/9/130969548/560069.pdfIn PDF document text
    • https://gibexiwufanoti.weebly.com/uploads/1/3/6/0/136099712/vozasexinexefin-zofebewotojut-boregepu-jumoxi.pdfIn PDF document text
    • https://kifajiziwezu.weebly.com/uploads/1/3/2/7/132740821/3552e18adae8b0.pdfIn PDF document text
    • https://razosuxox.weebly.com/uploads/1/3/4/7/134719946/1d96b3ec.pdfIn PDF document text
    • http://gdztut.com/casio_exilim_camera_ex-s2bja3f.pdfIn PDF document text
    • https://mogivara.weebly.com/uploads/1/3/2/7/132712472/5976644.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/831229925711qjpu.pdfIn PDF document text
    • https://topigofifudonif.weebly.com/uploads/1/3/5/3/135304546/82939f321e2c.pdfIn PDF document text
    • http://homiak.fun/argentina_economic_crisis98d7m.pdfIn PDF document text
    • http://mydenverneighborhoods.com/jesovarisixkw3gf.pdfIn PDF document text
    • http://about-igsupport.com/serdeczna_matkomkzvg.pdfIn PDF document text
    • http://conicppjry.bid/jenijexebisoxa07xhr.pdfIn PDF document text
    • https://pafufido.weebly.com/uploads/1/3/1/4/131407890/47520c54ac719.pdfIn PDF document text
    • https://rexerobebaru.weebly.com/uploads/1/3/1/8/131872155/gixofamatuwipi.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/7b604429-db33-477b-a588-428cc0b8af25/sambo_fighting_techniques.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1115afa-c45b-4b0a-a74e-5a492d903f56/filibazopodiruxisekewotul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa6d2a9-b5c0-446c-8a8b-af801b3d9ece/2546372149.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D9 5128 bytes
SHA-256: aa7d2805b84cf393c2dc204589d34778cf2544a8dc6fa89308b2395d7a0efcd2
font_01_sfnt_off00013373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13373 11428 bytes
SHA-256: 1c538ae0e92da6a6ec714682f802b473d0f459a4125184bfa6e4c9aebfb92fdf

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