Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bad858928804310…

MALICIOUS

PDF

72.1 KB Created: 2020-12-05 18:05:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b162c8c50981766ae5cad79be72b4b2c SHA-1: 1832b5f85fd00ca94f8698a4631ebf3e6cb29dfc SHA-256: 1bad8589288043103a78977a2568a414b914b9cd6639354813cd1a2ef3d13866
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The heuristic PDF_SEO_LINK_FARM indicates the presence of a large number of external links, with the primary suspicious URL being trafficked.ru. While no scripts were explicitly extracted, the nature of the PDF and the embedded links suggest an attempt to redirect users to malicious sites, potentially for phishing or SEO spam.

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
  • 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.
  • 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://trafftec.ru/123?utm_term=peace+through+superior+firepower+meme PDF link annotation
    • https://vajudufebebugi.weebly.com/uploads/1/3/4/6/134696622/3635533.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/palaj_xofepevez.pdfIn PDF document text
    • https://viwekaxirudadax.weebly.com/uploads/1/3/4/7/134700275/woluki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454045/normal_5fcae50569494.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/8576611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1c0e3485235c868d94b5/1606294543979/54995558884.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc144dc68612547ed60a5eb/t/5fca1dd1e262c015946a2254/1607081425758/mighty_final_fight_android_game_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e701bda9c57a97be38be/t/5fcaa89f35f635575f66b3b4/1607116959449/the_faith_life_church_appleton_wi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf63615147b148042b2a1d/1606378338470/how_to_build_a_mob_grinder_1.15.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52571d26ff1194f8f7eca/t/5fc67e94173fb5383b84f55c/1606844056231/24139711003.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc169f3e2fce462bc8f8ca6/t/5fc287d29d79364840df9eab/1606584275206/regal_cinemas_macarthur_marketplace_16.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c9d086b-c247-408d-96aa-9570581607ad/kosopotiwapebolamore.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc141a05687f52b6b83892d/t/5fc63ca45147b14804070627/1606827173061/fantasy_kingdom_defense_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfae93fdc31513a0f8aea/1606220522620/real_estate_test_for_dummies.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_off0000b1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DE 13184 bytes
SHA-256: 420e959b56cbb628e597980e85ee9850f3f9dc12a96dec001698538d23afe5ca
font_01_sfnt_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 5492 bytes
SHA-256: bef087687f70dee97ef89806b6d929b98ffbd05f2e05e11e3fe2b3541ef46014
font_02_sfnt_off0000eefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFE 10576 bytes
SHA-256: 0292476c36ee2363ab5f357fdc7d91e7796e5af578ea5c30b7d3d217a6c161d7

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