Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3b995a886b4938…

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 01:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7416e4aec9b813b48676bf1756458ef7 SHA-1: 292c59e921d6196804f2e641109619a4dcebcfbd SHA-256: 0b3b995a886b49382066639c444ae84cf2bebbf639c5d15ffda4f8a84ead759b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content is designed to trick users into believing there are new banking instructions, a common tactic in business email compromise attacks. The presence of a malicious redirector suggests the document is part of a phishing campaign aiming to compromise user accounts or financial information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=callan+method+stage+9+10+pdf
    • http://files.purrfectpalsadoption.com/uploads/1/3/0/7/130775380/4258984.pdf
    • http://mewibax.mylearninginwolfcreek.ca/uploads/1/3/1/0/131070374/3162081.pdf
    • http://files.lamosproductions.org/uploads/1/3/0/8/130873717/1a7b7e1baac280e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7614/7607/files/determinant_of_matrix_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/lojufijojikupajipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/sejoxek.pdf
    • https://cdn.shopify.com/s/files/1/0438/3146/0002/files/pharmacotherapy_casebook.pdf
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/31980879286.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/16_week_squat_challenge_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/wikusijebevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1864/8732/files/48208147473.pdf
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/90923379.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9930/files/6th_grade_geometry_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/berger_color_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/word_remove_all_emojis.pdf
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/nobomupemojibejurevi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/gatidogerejuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/xupezukuzomizini.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_off00006411.bin
a21c7b799c9c6ab39b49ddf08e6f896895e948ceda8469d243a2a7a8bdbb2768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6411 5612 bytes
font_01_sfnt_off00007703.bin
5bfc5a9b201ae6f57b5806bfcaa397f8017f08cf46344498e54fe55404d6b038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7703 10828 bytes

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