Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d0987d6222493b…

MALICIOUS

PDF

44.4 KB Created: 2020-08-05 12:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05dc499a2d716db28dacb1eacb5d110e SHA-1: 0084cc778fc40b6434fab9bad55a0a6f97690f7f SHA-256: d6d0987d6222493b5535f5a71a232b0c57f00f2e0ff1036cc976c48c8cd7268e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=rent+to+own+lease+agreement+pdf'. The document body, though heavily obfuscated, contains references to 'rent to own lease agreement pdf' and the malicious URL, indicating a phishing lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=rent+to+own+lease+agreement+pdf
    • http://files.livingwellstudios.com/uploads/1/3/2/7/132740685/7272374.pdf
    • http://files.nikkileahdesigns.com/uploads/1/3/1/6/131606231/juwidu.pdf
    • http://wivarufux.trenchninja.com/uploads/1/3/1/8/131871650/7d9ff24.pdf
    • http://files.indianmarriagebureau.com/uploads/1/3/1/4/131407823/79f62c81208.pdf
    • http://files.freestylefarmluncheonette.ca/uploads/1/3/1/4/131454523/9829560.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/30593332775.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/49782614943.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9959313526.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/25312044973.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/ccna_2_chapter_2_exam_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/41676686656.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/top_down_and_bottom_up_design_approach.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/ficha_tecnica_avanza_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/netimipiguvug.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/try_me_lil_durk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/kugaxivosizinaragurife.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.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/
    • https://cdn.shopify.com/s/files/1/0429/6

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007022.bin
e6afad06aaf8b281819ca0385023739f067029e7386681ff406a675b2fb7ec1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7022 5460 bytes
font_01_sfnt_off000082b6.bin
85c9770962d8d13052f39b79ac3b0883ac4cfcafd7c86254432d48cee7e88346
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B6 9884 bytes