Malicious PDF — malware analysis report

Static analysis result for SHA-256 180b9cc224c82553…

MALICIOUS

PDF

38.1 KB Created: 2020-08-24 12:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 382c471e92bcf9914c52e7ede9387e1a SHA-1: ef02b4117933113bc1cff715c009109f6574a22b SHA-256: 180b9cc224c8255388d89144b0e65fccd0ca29cee0bf3f7c8ecea2eb06dffa4f
154 Risk Score

Malware Insights

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

The PDF contains a deceptive title and a prominent link to a known malicious redirector, indicating a phishing or malware distribution attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the primary URL. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the PDF is part of a larger scheme to generate traffic or distribute content via numerous links, many of which point to benign Shopify URLs but include a malicious redirector.

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=official+boyfriend+application+form
    • http://files.marcaaronsenoner.com/uploads/1/3/1/8/131856186/gipibibogafivub_buzadisakorafof_todekototopaju.pdf
    • http://witisero.ioscaid.com/uploads/1/3/1/0/131070109/xufenofos-vebidowe-kifebekumib.pdf
    • http://files.lancarelloenterprises.com/uploads/1/3/0/8/130874045/7888128.pdf
    • http://files.rainaiscrazy.com/uploads/1/3/1/1/131163854/c6ad4ab5f241.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9623/6447/files/baseb.pdf
    • https://cdn.shopify.com/s/files/1/0440/9081/8712/files/family_chore_schedule_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/bilunufif.pdf
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/jokilifukerefetikepakaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7760/6303/files/74988970941.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0831/files/telecharger_alphabet_russe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/lujadidesarawevodezegeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3903/9388/files/kuriwufox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/ligobedisaviwaxivejidowos.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/the_cask_of_amontillado_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/89150756952.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_off0000564b.bin
46f7570e1b561ae300d5199b4ff9ce228266759bb83a3d082de1dca956e389c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564B 5392 bytes
font_01_sfnt_off00006881.bin
058cbe620f0b81cc1e26481fcb768d8249299170767de3158ba2fcc1bd76f59b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6881 10284 bytes

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