Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c1001916202d50…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 15:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64c71b06018c638cd0f47ac2c337f04a SHA-1: b4611ce3051d9c8e050db9d3afc83887934e95be SHA-256: 25c1001916202d507556647761a9ebf4c6f4f42c63c8f8a0a556d41f8a43ca21
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=architectural+digest+magazine+pdf' which is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

Heuristics 3

  • 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.
  • 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=architectural+digest+magazine+pdf
    • http://pevexuvu.buildaseries.net/uploads/1/3/1/3/131379591/62a7a60c2.pdf
    • http://files.stephencoetzee.co.uk/uploads/1/3/1/4/131454436/476610.pdf
    • http://zesavapip.adammichaelmcgee.com/uploads/1/3/0/8/130813528/kowiva.pdf
    • http://files.lilleto.com/uploads/1/3/1/6/131637701/853036.pdf
    • http://rogokemob.helena-yang.com/uploads/1/3/1/6/131606027/witodikikev.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/basics_of_automobile_engineering_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/rogufasibetus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/rujiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/91714847787.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/disease_modifying_antirheumatic_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/accounting_and_finance_for_non_specialists_atrill_mclaney.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/belomojakajivefuganum.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/85970378463.pdf
    • https://cdn.shopify.com/s/files/1/0452/3789/5325/files/777537880.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/22639744715.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/51821244374.pdf
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/87556519796.pdf
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/3659880797.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/38721626793.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/vusida.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000626e.bin
9c2c2de9d6c0c8e0d7960391e781c8974f387c166a8b15ac116453d085a9b9dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 5608 bytes
font_01_sfnt_off00007564.bin
334a578c1de861882a3198ad8a7255a44eacc469d0edae74a30e0b19223b2fa3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7564 9912 bytes