Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a5f68f5ca3b1d5…

MALICIOUS

PDF

77.7 KB Created: 2021-02-23 12:15:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8d02fced77338a65d99908d7a12bd738 SHA-1: 9b38e7835e6cc3dbfeb60cf5fb1f1e5227579536 SHA-256: 30a5f68f5ca3b1d5d01f956a4e334b809ca3ed5f36a0a83572031979da88168b
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm. The primary URL observed is https://druttle.ru/123?utm_term=wing+chun+dummy+price+in+pakistan, which is likely part of a phishing or SEO manipulation scheme.

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://druttle.ru/123?utm_term=wing+chun+dummy+price+in+pakistan PDF link annotation
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/4917046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_601e3c5545ba8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426957/normal_5fddaa0503c5c.pdfIn PDF document text
    • https://rixajijinuroje.weebly.com/uploads/1/3/4/4/134473879/futanusawifejin_zeriretagege_navek.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/haif4ge/brain_it_on_32_level_hint.pdfIn PDF document text
    • https://godebisexizo.weebly.com/uploads/1/3/0/7/130775633/a7bd112dfc71b3.pdfIn PDF document text
    • http://kimagibasip.22web.org/34062205978.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/b1je8ZP/miraroturepakesisubezotim.pdfIn PDF document text
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/sabakir_wukof.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/Bhijdih/xabanosisinazedo.pdfIn PDF document text
    • https://wexasubofuxumeb.weebly.com/uploads/1/3/2/7/132740188/xexopa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366382/normal_5fe5d871bad7b.pdfIn PDF document text
    • https://cdn.sqhk.co/samekikogeri/ifogcif/ionic_tab_button.pdfIn PDF document text
    • https://cdn.sqhk.co/manigonodapu/iajd5MW/mejikedikupeziseg.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/f60621c538333.pdfIn PDF document text
    • https://kaxozugusejerob.weebly.com/uploads/1/3/1/4/131452826/76cce1.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
    • http://bavidoripo.epizy.com/3199291204.pdfIn PDF document text
    • http://zerimokima.rf.gd/how_to_tell_if_your_child_is_reincarnated.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_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 5404 bytes
SHA-256: 28a8a1c57c77b30d2bf67a0e9dc4d0307e5733f9a3172a521a362f9ce0875be4
font_01_sfnt_off0000f6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 10608 bytes
SHA-256: 0192d05f922d04f79592c27bdff6ccb3dec8f49d6ffc642279ca97b2ca971721
font_02_sfnt_off00011b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B33 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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