Malicious PDF — malware analysis report

Static analysis result for SHA-256 630fa93c59d8c908…

MALICIOUS

PDF

49.1 KB Created: 2020-07-27 13:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9aa82cba382dfa25f2f8c3bb315d93e SHA-1: 6d6c28361470a835994003a12d37d100a2b29953 SHA-256: 630fa93c59d8c9081eebd59002111931d5f334aa49f3c836224d14735550aadb
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=imf+tanzania+report'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, including one to 'https://cdn.shopify.com/s/files/1/0431/1715/0368/files/bojuposojulaj.pdf'. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext, further supported by the document body's mention of an 'imf tanzania report'.

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.
  • 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. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=imf+tanzania+report
    • http://files.bowcreekkennels.com/uploads/1/3/0/7/130739120/2874723.pdf
    • http://files.joyfulnoiseguitarcentral.com/uploads/1/3/0/9/130969708/jugegatezusufavo.pdf
    • http://files.letstalkfoundation.org/uploads/1/3/1/4/131437378/bb52cac8c.pdf
    • http://files.k-mitchell.com/uploads/1/3/1/8/131871729/kenevexodiwezi-sobikuv-wozisesafe.pdf
    • http://files.spacecoastchristianacademy.com/uploads/1/3/0/7/130776490/rebafutu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/bojuposojulaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/wabodiburufir.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5644/files/59974884608.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/36434764374.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/zademetenud.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3069/files/16097180165.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/difegewolonuzosobevelevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/24431255196.pdf
    • https://cdn.shopify.com/s/files/1/0436/9114/7417/files/penokabikavipopa.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/71686400185.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/ropijasenamapaweb.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/60758092858.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/81547504478.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/98381833326.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_off0000817a.bin
1cbbfb1d2c1e12c0753a3fd7d053e05fb9b6e4359d11cf6b42d99c4621d18ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817A 4612 bytes
font_01_sfnt_off000090fa.bin
3da4ce0724ebc0687bd4638115f360a09a3562d56c53adfba72ecf56467171e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90FA 11128 bytes

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