Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5d80a29558ff43…

MALICIOUS

PDF

75.4 KB Created: 2021-02-13 21:15:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1739145e9d405bba9e403929b6d83e48 SHA-1: 654d1f478144da1e6df45dc38f91cfada1d5519b SHA-256: fa5d80a29558ff43a9c98ac21b814c84fd85413cd92f342e141068402fb87be8
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, including one that mimics a search result for 'before watchmen comic pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the presence of numerous disposable hosting links suggests a link farm designed to redirect users to malicious sites.

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 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://maypoin.ru/wb?keyword=before%20watchmen%20comic%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5ff28ea8153fe.pdfIn PDF document text
    • https://pebiname.weebly.com/uploads/1/3/1/4/131453048/06763d.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/8ggjaij/wamudugajoruzejopibo.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/ohjjchj/beat_the_boss_3_mod_android_1.pdfIn PDF document text
    • https://zavegaligap.weebly.com/uploads/1/3/4/4/134499553/6192711.pdfIn PDF document text
    • https://liwitozawaben.weebly.com/uploads/1/3/4/0/134042828/jowosix-poponukidudo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5fcd0a0de72a2.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/ajfivgr/tip_top_tux_omaha_village_pointe_hours.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/mavabowuk.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/ijOiaib/topovatevi.pdfIn PDF document text
    • https://vilabusifa.weebly.com/uploads/1/3/0/7/130776169/dunifuvevonugeba.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/gEiicEn/pufezisu.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/igBgdhf/kifijo.pdfIn PDF document text
    • http://thefoundingfields.com/2013/07/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sezewu/tvn_amazing_saturday_sub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/39322127139.pdfIn PDF document text
    • http://lenidifumejuvig.rf.gd/46531435044.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE953 5324 bytes
SHA-256: d264a80fafe6cc9099199db3ac2c0b205d8fbcc567af1dbd13fddad571db0265
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 10852 bytes
SHA-256: 66b82a20040ac1fbaeaadc1261e93e9254b35201abd306cc24703f1f0feac045

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