Malicious PDF — malware analysis report

Static analysis result for SHA-256 44bb159d4c6dcb7b…

MALICIOUS

PDF

45.8 KB Created: 2020-10-10 20:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 82aca770172d22115cafbd5e0acfbe6b SHA-1: e118267e758e60bef4fbee8688c804c5c48a8c90 SHA-256: 44bb159d4c6dcb7b3a0ee8cd5d219aa1054d337daea149b9508eed6d16363786
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/pify?keyword=honey+select+unlimited+slider+mod In PDF document text
    • http://files.thefaithfulpout.com/uploads/1/3/1/0/131070170/5ed17cdfa63.pdfIn PDF document text
    • http://files.homeopathhealer.com/uploads/1/3/1/3/131380847/nijagitapati_tukotosizivu_fewebar.pdfIn PDF document text
    • http://xuxudujej.shupik.com/uploads/1/3/2/6/132682892/lufofukumomataz_gufasug_lovaz_sawik.pdfIn PDF document text
    • http://kekutaba.spotlighteditorial.com/uploads/1/3/0/7/130775840/68a76a5f30606.pdfIn PDF document text
    • http://files.iljadecoster.be/uploads/1/3/0/7/130739462/32d64f6db.pdfIn PDF document text
    • https://site-1038872.mozfiles.com/files/1038872/genolukimasojutamejev.pdfIn PDF document text
    • https://site-1039405.mozfiles.com/files/1039405/danatuxabanapukole.pdfIn PDF document text
    • https://site-1043767.mozfiles.com/files/1043767/76637325075.pdfIn PDF document text
    • https://site-1039279.mozfiles.com/files/1039279/fukirufoma.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/kewajikumigogajejebile.pdfIn PDF document text
    • http://files.monroecoswcd.org/uploads/1/3/1/3/131398358/tozevefesejonezo.pdfIn PDF document text
    • http://lemagilok.en.fotographia.ch/uploads/1/3/1/1/131163507/d9ad225308b0a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00007703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7703 4936 bytes
SHA-256: 734e8e0e08abb3d64a78549295cd949af336ba87e1f337d7101f7f2013be0997
font_01_sfnt_off000087bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BB 10128 bytes
SHA-256: 1901e06eaab5ed1a2a7a2c822121130061ea1e867bf790a20d6359402592cb0c