Malicious PDF — malware analysis report

Static analysis result for SHA-256 60df53843f2a6f09…

MALICIOUS

PDF

38.8 KB Created: 2020-08-24 08:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b319152113cf5e1cc48a3c5e1516206f SHA-1: 487fe75008d3485724952eb7721b32bea692b5d0 SHA-256: 60df53843f2a6f09d95b14bfbe93db5a8100c4a421fd235240557348430d791f
174 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a pension application, aligning with callback phishing or tech-support scam patterns. The presence of numerous other links, many pointing to benign Shopify URLs, suggests a link farm intended to obscure the malicious destination.

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.com/pify?keyword=new+zealand+aged+pension+application+form
    • http://files.bradleyhartmanbakken.com/uploads/1/3/0/9/130969399/jutadofetesajavazoj.pdf
    • http://zilaso.massapequahistoricalsociety.org/uploads/1/3/2/8/132815296/7566851.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/99743332198.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0297/files/advanced_language_practice_michael_vince_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/paramore_my_hero.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7963/files/74927473328.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/6052128510.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/xusupimamorekebuma.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/78996762908.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/41792620143.pdf
    • https://cdn.shopify.com/s/files/1/0444/1568/0679/files/depesevoginirasajawe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/44382953783.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/24700265181.pdf
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/18022809322.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/wigawibiwibudajogem.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_off00005864.bin
a32cba737142d352b03b9c9ce051084272aa78df49e1b29704278b1a29b5b5e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5864 5588 bytes
font_01_sfnt_off00006b64.bin
d2f910a4d1a74669b6481128b0b4d3106fefa4f130f4ac937a330125cee9c5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B64 10300 bytes

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