Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0e473f7cbaa2a6…

MALICIOUS

PDF

81.4 KB Created: 2021-01-22 18:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a3e6491f3493e7c6a796ac5af48f49d2 SHA-1: e0a3b12c071c025ab62168d9d26ecd3183d611dc SHA-256: 9d0e473f7cbaa2a6706c8fc2afaa5b21c4a9cd2e337aa879730ecfe113253732
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a URL with a 'football games unblocked' term in the query string indicates a lure to attract users. ClamAV and ML classifiers confirm the malicious nature of the PDF, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://traffine.ru/123?utm_term=football+games+unblocked PDF link annotation
    • https://site-1254600.mozfiles.com/files/1254600/mosagavesogenirogoga.pdfIn PDF document text
    • https://cdn.sqhk.co/weteroliwo/iczTMje/mibulinilalewofekudoludub.pdfIn PDF document text
    • https://wujupeduluruwuv.weebly.com/uploads/1/3/5/3/135316277/zawetonorugivibisuzu.pdfIn PDF document text
    • https://cdn.sqhk.co/jekurona/0FNhfji/chocolate_cake_recipe_using_buttermilk_uk.pdfIn PDF document text
    • https://site-1221861.mozfiles.com/files/1221861/repowatoxawadanupob.pdfIn PDF document text
    • https://wedidosav.weebly.com/uploads/1/3/1/6/131637371/3709230.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/v9gchcH/lefavimufezafumofinunu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366348/normal_5feee74a2deb2.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/thcRija/types_of_real_hybrid_animals.pdfIn PDF document text
    • https://site-1174534.mozfiles.com/files/1174534/6293553588.pdfIn PDF document text
    • https://voxipomawo.weebly.com/uploads/1/3/1/3/131379395/fifudiborij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389085/normal_5fec05197ab95.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/mudagibej-kikuwuruja-nizavega.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/f1cjhbi/truck_hill_climbing_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443576/normal_5fd65105415d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/31359289966.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/cheat_sheet_git_flow.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/65124991121.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/nokokepukop.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FE 5156 bytes
SHA-256: 1054d1b102bf687cda429658d62e480d5242effe257e6d5cb82f1f7fc32299f8
font_01_sfnt_off00010579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10579 10680 bytes
SHA-256: b9f48a5a095354765aea5e00b9d47beb55c898123b963dba9accee0527cd9cc4
font_02_sfnt_off00012a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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