Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d82965d3406e52…

MALICIOUS

PDF

40.3 KB Created: 2020-08-19 13:33:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afa0e110a0785483b9410c566f2309be SHA-1: 99d88373d09b6286246bf682e6a5d4fd2777fe57 SHA-256: 60d82965d3406e527e5e320ff3b3e5d96acc9a1b0c70406ddc9e52f045596e5e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, includes the same URL and references a 'guide', suggesting a social engineering lure. The presence of numerous external PDF links, many pointing to Shopify, further supports the SEO link farm heuristic, often used to obscure malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.cc/pify?keyword=mordhau+chambering+guide
    • http://bikanoti.stonesthrowtravel.com/uploads/1/3/0/7/130776445/86cf0.pdf
    • http://files.thomfogartypresents.com/uploads/1/3/1/1/131164462/wimazozedawadotetop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/jizifisute.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/42684354057.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/behaviorisme_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0437/2260/4695/files/fagilerebuwev.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/nudugorupatuwawawuvoxiji.pdf
    • https://cdn.shopify.com/s/files/1/0435/9415/4146/files/chinarayudu_telugu_audio_songs.pdf
    • https://cdn.shopify.com/s/files/1/0452/7433/3346/files/52561198705.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/89796995198.pdf
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/18640766643.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/56666517463.pdf
    • https://cdn.shopify.com/s/files/1/0436/9956/8795/files/73420301713.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_off00006100.bin
2feb39cf6af023d9bd2ee4eb9b8397d2bdb0e9b613bee11f73bbd2f3f96bc542
pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 5288 bytes
font_01_sfnt_off000072de.bin
d59aaef00172fbdddea080c3fa21943b0c2b41f43743dde2ced71f785b29b970
pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 9940 bytes