Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b362d6105510097…

MALICIOUS

PDF

70.4 KB Created: 2021-06-11 00:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b5eb63fa083334d206dc2eccbe2468b SHA-1: 3c534f1d18be04390758c8ed793371ae085add69 SHA-256: 1b362d61055100971ffc95b19394d513f56d5f116f6f00002191f399a5e2cb39
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic firings reveal a link farm of 30 external PDF links, with the primary URL pointing to a product search. This suggests the document is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links points towards a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/wb?keyword=dirt%20devil%20power%20max%20xl%20bagless%20upright%20vacuum%20cleaner
    • https://komavumi.weebly.com/uploads/1/3/0/7/130738531/jegoxafave.pdf
    • https://tetoxoji.weebly.com/uploads/1/3/0/9/130969306/2fc087bff9d68.pdf
    • https://zurenigexozaxil.weebly.com/uploads/1/3/4/6/134606750/mududituwuketor.pdf
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/13df46.pdf
    • https://cdn-cms.f-static.net/uploads/4382948/normal_60327fcd108bf.pdf
    • https://static.s123-cdn-static.com/uploads/4383128/normal_5fc7a351211ec.pdf
    • https://cdn-cms.f-static.net/uploads/4459329/normal_60444b2030117.pdf
    • https://goxesepejapumew.weebly.com/uploads/1/3/4/6/134609979/85add259.pdf
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/a7e86f24e7a.pdf
    • https://sidagavaru.weebly.com/uploads/1/3/2/8/132814791/9197960.pdf
    • https://static.s123-cdn-static.com/uploads/4453900/normal_60014d93d55eb.pdf
    • https://bupitubijas.weebly.com/uploads/1/3/4/0/134040922/2044932.pdf
    • https://static.s123-cdn-static.com/uploads/4483624/normal_5ff872f207ab9.pdf
    • https://givozerav.weebly.com/uploads/1/3/2/7/132710596/jetovigunax_gedaruxajun.pdf
    • https://rupusuji.weebly.com/uploads/1/3/4/8/134878943/36f0b55a7511e.pdf
    • https://buxutagugumazas.weebly.com/uploads/1/3/4/0/134095839/sofizudisode_vovubenogifetod.pdf
    • https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/fojibisoxo_tidiwatax_dujavezim.pdf
    • https://zikowipon.weebly.com/uploads/1/3/5/3/135300096/sezebuba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://saxonax.pbworks.com/f/gebofirululorizid.pdf
    • http://karulimomaw.pbworks.com/w/file/fetch/144915483/manual_accounting_system_examples.pdf
    • http://wenitudodub.pbworks.com/f/1570650586.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2c7.bin
501287d102574ea2eeaf4744ed01dfaeb5ab7c4a93e4403e991ad34e54e0e00e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C7 5848 bytes
font_01_sfnt_off0000e69b.bin
24e7184b55f27129316641a90b63a6e29a94d48a2c257123362f24fec296e6ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE69B 11028 bytes

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