Malicious PDF — malware analysis report

Static analysis result for SHA-256 219686bcbf2e5505…

MALICIOUS

PDF

73.2 KB Created: 2021-01-25 11:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 048028f1cdd1f96dd4933a853d20279e SHA-1: 5ba6f8ffa951ad8d99ff6c6f8ba8e9c8cf67d585 SHA-256: 219686bcbf2e5505b4cd5b8c049735782ccf0d2d13ceaf9c6dcaf260af470154
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to a game download, aligning with a phishing attack pattern.

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://trafftec.ru/wb?keyword=toca%20hair%20salon%20me%20free%20download PDF link annotation
    • http://tk-time.site/48327806380qt0ve.pdfIn PDF document text
    • http://fridgeservice.ru/bilefitajozawi1woex.pdfIn PDF document text
    • http://winoraama.website/85569482359n2iff.pdfIn PDF document text
    • http://oneshops.space/tumblr_themes_free_minimalw5bav.pdfIn PDF document text
    • http://aduo5.online/579225379304a3eq.pdfIn PDF document text
    • http://kukushpa.fun/99124284929nevww.pdfIn PDF document text
    • http://pycnidwzxc.info/neburapodubu3th4.pdfIn PDF document text
    • https://fafidapumexeri.weebly.com/uploads/1/3/1/4/131437561/sosobisizuleliwufe.pdfIn PDF document text
    • http://igrarazuma.info/water_pipes_whistle_when_toilet_is_flushedb9ert.pdfIn PDF document text
    • https://dubebonu.weebly.com/uploads/1/3/0/8/130874554/dasoran.pdfIn PDF document text
    • https://masezinonorokun.weebly.com/uploads/1/3/4/6/134685416/fevoputurugaf_lowidepe_pebigavuxuze_sineju.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/23728f4ab.pdfIn PDF document text
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/fb474b1954a.pdfIn PDF document text
    • http://zebrait.fun/pedafofonivazositotekilenwzd3g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/begijufadi/ak_47_machine_gun_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/11390377985.pdfIn PDF document text
    • http://xefesogojodegu.epizy.com/32703055165.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_off0000e136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE136 5304 bytes
SHA-256: 63121ed62f853f0c70d9ee0ad1a610cc026a5717821d94c5a5bb98e90fae44ac
font_01_sfnt_off0000f321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF321 10560 bytes
SHA-256: 143b8e824dcaea99e60bece3983acde927bae1cfa5f51fe865862e7d08f2ddbc

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