Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37e55c19531d058…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 13:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9fb4cbc4d980f9809aa951c859f84cb SHA-1: 683d9b0e0bb2c8b47776c35ec5d24be7f6879dd1 SHA-256: e37e55c19531d0582c287275428e8fd706c1a86736ddb38826ac8ee11653747f
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=budget+worksheet+printable+pdf'. This URL is presented within the document body, disguised as a 'budget worksheet printable pdf'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content broadly. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=budget+worksheet+printable+pdf
    • http://files.healthgeography.org/uploads/1/3/0/7/130740589/04993433284466d.pdf
    • http://files.vinoandvernici.com/uploads/1/3/0/7/130739212/6162816.pdf
    • http://files.muttsnmischief.com/uploads/1/3/1/4/131411542/numuwavizuwu.pdf
    • http://files.ieperiostudyclub.com/uploads/1/3/1/0/131069764/zomoluwel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/sinusoidal_oscillators.pdf
    • https://cdn.shopify.com/s/files/1/0447/9316/8023/files/aids_causes_symptoms_treatment_and_prevention.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/dekalabale.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/xubemabukukuvedunuretu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/spc_manual_aiag.pdf
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/59174056445.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8474/files/prebles_artforms_12th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/canon_eos_30d_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/sanomopurexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/74995357944.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/jitazuvezejuzubararibom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/86387431908.pdf
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/29449644191.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/algoritmos_geneticos.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_off000065c3.bin
36e354c49a32619965a58e7d08d60854d802e1a6be6d285a1db9795671c3af4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C3 5648 bytes
font_01_sfnt_off000078fe.bin
9403609251828085023cb617b2eb28bca407d2cdda920057107fa3b3d73e1377
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 10048 bytes