Malicious PDF — malware analysis report

Static analysis result for SHA-256 a470339901c88118…

MALICIOUS

PDF

73.3 KB Created: 2021-01-31 19:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cebeef0afa30d8e34646daf68dca9ef7 SHA-1: fa247bd26af9987168c1b9289bc9e6a820d8f5cf SHA-256: a470339901c88118eb426b0b1f463bbd88aa5b1f1a70ab568b2ab2683c9d7664
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting, and one specifically redirects to a known malicious domain. The document body is obfuscated but contains a lure related to location-based searches, likely to trick users into clicking the malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=nearest+car+wash+near+my+location In PDF document text
    • http://habercigo.com/nibobipanupiketifujazp2vk3.pdfIn PDF document text
    • https://petizigosi.weebly.com/uploads/1/3/4/9/134903326/4716801.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/U6WSqjg/break_it_down_again_lyrics_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_60096c7498035.pdfIn PDF document text
    • http://vnds-v.website/trane_cgam_loss_of_charge_alarmaruwp.pdfIn PDF document text
    • http://vinnipoh.fun/burugafogokukofux940h.pdfIn PDF document text
    • http://goldstein.berlin/47976843211eh20c.pdfIn PDF document text
    • http://tezosomebapixim.22web.org/vozojose.pdfIn PDF document text
    • http://premiumpornclips.com/dikejgxn04.pdfIn PDF document text
    • http://itali-big.space/12130082141djo3x.pdfIn PDF document text
    • http://popularchoice.space/grille_daccords_guitare_my_waya4mcd.pdfIn PDF document text
    • http://shoop-ff.ru/tajeduvufebom6e6be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448986/normal_6001c25c11f2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450040/normal_5ff0ce375320a.pdfIn PDF document text
    • http://idslim-italia.site/2340155629422zys.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vumavoralamo.rf.gd/rexozamabojegolezus.pdfIn PDF document text
    • http://pimudovi.epizy.com/getupojewizulef.pdfIn PDF document text
    • http://rebobimakefeli.epizy.com/dozoxejivigeker.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_off0000e3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FB 5200 bytes
SHA-256: 8915b5fdd44f94d457da3ef964f577e86041f99ee5eec20f9129f1bc94d85805
font_01_sfnt_off0000f597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF597 10172 bytes
SHA-256: 739085ec35ca77214f89a5cdebd6347701a1b0eaec17ae544f94ff2da4aea6c9

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