Malicious PDF — malware analysis report

Static analysis result for SHA-256 8908cca66a505a77…

MALICIOUS

PDF

86.2 KB Created: 2021-04-25 15:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5b2284590b520971ddeb108ba2e45a50 SHA-1: 57df360d146cd782d9dd4819031f0b4617822ade SHA-256: 8908cca66a505a7738202a1037e0c6f8816717f478368986933894beb2d460ba
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 0.9994

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://midufefew.ru/strik?utm_term=wagner+airless+paint+sprayer+tip+guide PDF link annotation
    • http://mon-cmso.best/gumoniex5bi.pdfIn PDF document text
    • http://sollabs.xyz/41902300080e4gv1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500911/normal_60283a2bc116f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386073/normal_605f82d1be97e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_6023cff648ed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475565/normal_605d88055d87b.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/gimanalowojerowemo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371003/normal_600545a6adae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410459/normal_605c1d3d4b38b.pdfIn PDF document text
    • http://reduslim-shop.website/72256687825dxn6v.pdfIn PDF document text
    • http://lorenbayi.com/19281068887sy1el.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459318/normal_5fcfa2470edf0.pdfIn PDF document text
    • http://otshelnik.net/61481767485hihhd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_603161dc2a616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_601cda8f3a413.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/what_is_the_meaning_of_the_name_tanya_in_hindi.pdfIn PDF document text
    • http://ragofilud.medianewsonline.com/33172081832.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobuwijezad.onlinewebshop.net/75028847161.pdfIn PDF document text
    • http://zusaxadixuxot.myartsonline.com/strength_of_materials_for_gate.pdfIn PDF document text
    • http://jedasajel.epizy.com/the_firm_book_movie_1994.pdfIn PDF document text
    • http://morubuzis.rf.gd/temperamentos_transformados_pelo_espirito.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/eddie_bauer_baby_carrier_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/ruravobilofuxefedu.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_off00010dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEC 5244 bytes
SHA-256: 8eee757fe9c2e15f35b62d060650ae2603c257fdefd9b7224fe5e1d2becb652c
font_01_sfnt_off00011fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE7 12844 bytes
SHA-256: 70d91b3984201287e31228ae587a646f085e272ada0a9e3fb0e4595327016e09

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