Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed028a327b8d3d17…

MALICIOUS

PDF

38.9 KB Created: 2020-08-21 13:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b932548bbc452ddd9b02b69d113c4ea SHA-1: 6e963926831977defe6877d6afc200929a8e262d SHA-256: ed028a327b8d3d17e82566a688fbc9597acdcd262afe50e45473442b6b4ee4be
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments and a URL that suggest a lure related to a game or phone offer. The presence of a link farm and a redirector indicates an attempt to lead the user to malicious content, likely for phishing or scam purposes.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=doraemon+game++jio+phone
    • http://files.businessdesignservices.com/uploads/1/3/1/4/131453904/wafiwowuli-wimoxuvewufoni-volejaf-luribik.pdf
    • http://wejefij.ugaswimanddiveclub.com/uploads/1/3/2/7/132740405/bipikokimimexev.pdf
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/buvokarujeluzikatebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3669/files/6661571264.pdf
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/naxalesirarofikerobika.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/hofmann_bromamide_reaction.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/43654232196.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/seventh_day_adventist_bible_commentary_vol_8.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/cardiopatia_ischemica_cronica.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/a_quiver_full_of_arrows_jeffrey_archer.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/fidat.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/como_criar_uma_assinatura_digital_em.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/moss_adams_pediatric_cardiology.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_off00005b4c.bin
283fd50f5a711ebf535ecf72dc08fde9334634c9b050578894c03cf471a82c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4C 5096 bytes
font_01_sfnt_off00006c83.bin
8b88f0aae98532e3d8dc8da767fd009cf220b8d1271f6d13b1fc91ae285bce55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C83 10104 bytes

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