Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f56cc0cb6204d3…

MALICIOUS

PDF

62.3 KB Created: 2020-12-23 01:19:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6f684535368ca108504086e8b5b59782 SHA-1: c1bca6219bc79c309961f94dea98be224299ab60 SHA-256: b9f56cc0cb6204d3dbb5944dc6a7adc987e5aa5b4559f23daf4370b41c2230aa
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed to direct users to malicious sites. One prominent URL, 'https://trafffi.ru/strik?utm_term=sophie+fashionista+dress+up+game+apkpure', is directly associated with the lure of a game download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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 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://trafffi.ru/strik?utm_term=sophie+fashionista+dress+up+game+apkpure PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486565/normal_5fdde6629841c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454287/normal_5fd9def337cdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8cbd772ad37.pdfIn PDF document text
    • https://zizipidefogin.weebly.com/uploads/1/3/4/8/134852386/tatikosiburaguvut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5faf592a960cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447095/normal_5fc15611706a7.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/635c185f-548a-4b4a-940e-085c6a39831d/zesodekazukaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcaa7c5e71df64d6bdd8f6/t/5fdce9d89834f579668eed85/1608313305121/estabilizador_atomlux_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db450ea-e88c-4319-a0b8-bc9f913cbf8f/parrish_funeral_home_fort_smith_arkansas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ddc5cf-ac6f-46f7-bd82-04c2e7dbc8c2/the_great_gatsby_chapter_6_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14892f9866f3fd2d6f995/t/5fc73cd556cd4459b3b4c40d/1606892758313/69032500770.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_off0000a8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D7 5592 bytes
SHA-256: 29081ed987c7c52a39a096a061e50e621b6fcc4e34046970915228a5bd731971
font_01_sfnt_off0000bba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA5 3164 bytes
SHA-256: 73678e2a795a654ecd99f38e59657c3a5bda7177a073b54ca588ff8b4b01e380
font_02_sfnt_off0000c823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC823 10176 bytes
SHA-256: 7d9e03d2e8616561e5aa666fd70cfe3a50d1528b22aada109df6ca977d1044ac

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