Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1611c6b8578e52…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 22:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8d5366863c7cbcb010d21cdad2a251b SHA-1: bb471845fb5083c34ab030160fcba9bf878bf8ce SHA-256: 0d1611c6b8578e52eb1c53cde74617b9ad10f0fe416fec1acfc9be755f6a0e90
174 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, masquerading as a 'customer behaviour analysis pdf'. One of these links, 'https://ttraff.cc/pify?keyword=customer+behaviour+analysis+pdf', points to known malicious redirector infrastructure. The document also exhibits characteristics of a callback phishing lure, suggesting an attempt to trick users into engaging with malicious actors. While no scripts were directly extracted, the presence of multiple links and the ML classification indicate a high likelihood of malicious intent.

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=customer+behaviour+analysis+pdf
    • http://files.sofiajagbrant.com/uploads/1/3/1/8/131856076/f5f1671979f5.pdf
    • http://files.koicarp.sk/uploads/1/3/0/7/130739371/70a5b50712.pdf
    • http://files.oneearthoutlet.com.au/uploads/1/3/1/3/131383837/e156cec681525a7.pdf
    • http://powipojur.sthilaryhouse.co.uk/uploads/1/3/1/6/131637814/fulijozud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0206/8131/files/algebra_1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/53055552873.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/export_text_messages_from_iphone_to_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/80824253064.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/98423146669.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7847/files/58423870158.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7909/files/50429470779.pdf
    • https://cdn.shopify.com/s/files/1/0433/9931/5610/files/postgres_import_csv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/69390004079.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/pubufivojixiretamix.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/jawenisisufifewosutol.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/luvoxefupufetepep.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_off00007814.bin
ad1287cd091f84572983b482b5060b7f5bc7ff82f6b176c2428846085facda3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7814 5488 bytes
font_01_sfnt_off00008a93.bin
3d692cb84c081172b668f63e9a3bcf7797ab6736f7c57f6e9628421f721c1f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 9804 bytes

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