Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a8943bf480cdd3…

MALICIOUS

PDF

112.4 KB Created: 2020-08-02 19:15:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eedcdb5c0f7c3019452b1c9c87e2078a SHA-1: 43692446108054b66762d96203af1781cd4efee7 SHA-256: c3a8943bf480cdd359b36da193b1e395544fb47d95fa606b85cd2df42bf96909
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ge+refridgerator+repair+manual'. Additionally, it exhibits a PDF link farm with 30 external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The 'SE_MFA_LURE' heuristic indicates the document's content is designed to trick users into providing sensitive information like one-time codes or MFA approvals, consistent with credential phishing.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=ge+refridgerator+repair+manual
    • http://files.serenitypools-fiberglass.com/uploads/1/3/1/4/131453543/2212876.pdf
    • http://files.thurmontmainstreet.com/uploads/1/3/2/7/132712163/zodukunokizak.pdf
    • http://files.somalimuseum.org/uploads/1/3/1/8/131856308/faa2d9b12c9a.pdf
    • http://files.refugehomecare.com/uploads/1/3/1/4/131406843/492c2c86824f.pdf
    • http://files.defineandfree.com/uploads/1/3/1/6/131637385/wureg_gagok.pdf
    • https://cdn.shopify.com/s/files/1/0434/0426/3585/files/clep_microeconomics_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/bibilazasimakowofekewusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/78303567492.pdf
    • https://cdn.shopify.com/s/files/1/0430/3093/7751/files/ripogegud.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/sunubipowiwomogetesenevan.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6584/files/pitaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/zadojen.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/bafima.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/wovegaje.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/masalujozagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/36537569630.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/35635414723.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/74331766961.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_off00017d32.bin
0555e5d06fbc88d61f9076a52946005c3f4613eb88b6859c409a836b71c4c48f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17D32 5216 bytes
font_01_sfnt_off00018ee2.bin
fe8b7028d5d98d9d19778990700497b444ca6cc5cd24ff3e12c166a64122c32b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18EE2 10672 bytes

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