Malicious PDF — malware analysis report

Static analysis result for SHA-256 705625fa623c5310…

MALICIOUS

PDF

45.6 KB Created: 2020-08-03 21:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c98fad9e39660892fdfa7d25aa9e55a3 SHA-1: da8df510ad5fb99cde49ad57e06fc82909017cde SHA-256: 705625fa623c5310fafbc91163a93ca3c92306fb30351794aab35eace4a2f247
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to other PDF files hosted on Shopify. One of the primary links, https://ttraff.ru/pify?keyword=afterthoughts+on+visual+pleasure+and+narrative+cinema+pdf, is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to drive traffic to malicious infrastructure, potentially for phishing or malware distribution.

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.ru/pify?keyword=afterthoughts+on+visual+pleasure+and+narrative+cinema+pdf
    • http://files.musefuse.org/uploads/1/3/1/4/131483128/5373928.pdf
    • http://files.johnstefanondesign.com/uploads/1/3/2/6/132682022/raremigemedarove.pdf
    • http://files.maternitybabyacademy.com/uploads/1/3/1/4/131453902/3b5b8f60.pdf
    • http://files.umbrapoodles.com/uploads/1/3/1/4/131438651/rimaduve_koduxawe.pdf
    • http://files.savingteachertime.co.uk/uploads/1/3/1/8/131856827/fc1bb16.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5301/4427/files/zotefisiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/62975707650.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3061/files/gaxirufijurijobuvoxeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/sibezerusomudezafugol.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/nikatekozarubexujo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/68787186605.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/podif.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/nimesufozusanirutuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7938/5756/files/star_wars_battle_front_2_ps2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/19943335223.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/xonalanuxekik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/fudofudimilipubimegiwaba.pdf
    • https://cdn.shopify.com/s/files/1/0429/1372/6631/files/83667405534.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_off000073b1.bin
3e26a0c5faa1563fd38728f7dfa67061ee09f8230d805b57fe258aaf1a3ae0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B1 5620 bytes
font_01_sfnt_off000086b1.bin
7f26ba20276c80e13e1688e4a277a45293ff5e5a73e9c0a4cf14ad210e0f185e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 9956 bytes

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