Malicious PDF — malware analysis report

Static analysis result for SHA-256 0348e131e6039e13…

MALICIOUS

PDF

47.4 KB Created: 2020-08-25 01:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67bc00ea09bc2a0397b619e00fed0d3f SHA-1: c25b0b94c89d1e9f67d6351876a79d5643e1ea01 SHA-256: 0348e131e6039e1342017977a18337e1114b871f1534ddf7433588c65a543b7d
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, `https://ttraff.cc/pify?keyword=steam+workshop+er+hearts+of+iron+4`, which is flagged as malicious. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The ML classifier strongly indicates maliciousness, and the overall structure suggests an attempt to drive traffic to malicious sites under the guise of providing game-related content.

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=steam+workshop+er+hearts+of+iron+4
    • http://files.daytonboatclub.org/uploads/1/3/0/7/130739996/9344dd3345e.pdf
    • http://files.peacockmosaics.co.uk/uploads/1/3/0/7/130775361/mapijoriz.pdf
    • http://files.askeaton.coralleisure.ie/uploads/1/3/0/9/130969551/2853094.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/4717/2768/files/salusuwebekudar.pdf
    • https://cdn.shopify.com/s/files/1/0462/7903/2992/files/86935637135.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/84486294179.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/free_toefl_practice_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/23327963332.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/48352730775.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/83567646477.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/novela_aura_carlos_fuentes.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/logo_quiz_answers_level_112.pdf
    • https://cdn.shopify.com/s/files/1/0437/0019/1387/files/chemistry_and_pharmacology_of_anticancer_drugs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b3.bin
634b854d23a3ea4f166032108e08d9e8c5c77aeb6d9fa4e904cd863c402ab059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B3 5244 bytes
font_01_sfnt_off0000796c.bin
57b808e1821c463cc17dfd48013d6dc582488f1a0dac24c17dbda39ed1211493		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796C 12816 bytes
font_02_sfnt_off0000a259.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA259 4324 bytes

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