Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d96516b686336a…

MALICIOUS

PDF

41.7 KB Created: 2020-10-25 06:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e90e487d167a0e51828ea1819ba3be60 SHA-1: fddcd9fcaf93031d9c1afb2e0a961dbbc9a58a44 SHA-256: e1d96516b686336a84f7cbfa06216b6fa9e3d7e99d398bc03298adadf1384d90
162 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with the primary one directing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/123?keyword=enterobacterias+em+alimentos+pdf
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/delelides_dasexurekiwar_jajumab.pdf
    • https://zijananuwale.weebly.com/uploads/1/3/4/4/134438714/4b3e893f599b.pdf
    • https://cdn-cms.f-static.net/uploads/4377902/normal_5f8e87fec861b.pdf
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/nilewuwito.pdf
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdf
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/kokozonamabim.pdf
    • https://mijelowiwiloz.weebly.com/uploads/1/3/1/1/131163856/zaberimov.pdf
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/2404c8697.pdf
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/9402018.pdf
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/wegapogegojisapogiz.pdf
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/a8de737c18816af.pdf
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/c74a8.pdf
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/2110181.pdf
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/8627409.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/tozepewesejevakapipoka.pdf
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/camper_van_conversion_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/623791979.pdf
    • https://cdn.shopify.com/s/files/1/0484/8153/4102/files/7-aad_flow_cytometry.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_off000063ef.bin
be21b012fb6658c63bb8454ea1d4095d4ab905cf56c517aa1c19bb9f1a7f562c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EF 5400 bytes
font_01_sfnt_off00007630.bin
c639d738ce2ca0ce41f327fb896c58a66ac42529bd488f49188f09b26b400ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 10564 bytes

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