Malicious PDF — malware analysis report

Static analysis result for SHA-256 678f4d2809256350…

MALICIOUS

PDF

48.4 KB Created: 2020-08-22 16:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2011ccd2968a18a5a4bbc64c16d193f4 SHA-1: ed33ad3d802e38e060a4fcd5aad90ff7afb6f1b5 SHA-256: 678f4d2809256350bf710b9a51dac5197d05a2442987603cd231cf6b2b58ff89
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a lure for a "ups air waybill template" which redirects to a malicious URL. The presence of numerous external PDF links suggests a link farm intended to distribute malicious content. The ML classifier strongly indicates maliciousness, and the callback lure heuristic further supports a phishing or scam attempt.

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=ups+air+waybill+template
    • http://kawuvo.rambosiu.com/uploads/1/3/1/3/131398222/a7a2e0875e11862.pdf
    • http://rinidat.woodlinecreations.com/uploads/1/3/2/6/132681746/gibawuxazola.pdf
    • http://tujorigi.freeplaymerch.com/uploads/1/3/0/8/130814328/05bc4640e4448.pdf
    • http://files.aeropm.net/uploads/1/3/0/8/130814043/deduzosuko.pdf
    • http://///www.ftc.gov
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/jolelulapugomipidamivuv.pdf
    • https://cdn.shopify.com/s/files/1/0463/0439/5426/files/xubiwubitovi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/16797260314.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/icloud_photo_all_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/45688391626.pdf
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/chokher_bali_story_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/6046/0701/files/wuriperiwexaxun.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/25396570370.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/betagalegagigabamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.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_off00007ce2.bin
cf9e4b8d3d7ed17256f6329e7e50ebb4f26ddea27754d3242d3464a5adf21215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE2 5288 bytes
font_01_sfnt_off00008ed9.bin
409e6fe5814eaf0062c528a035d09c5cfe37955a525ae9204ad2bc0c2c28dfee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED9 11196 bytes

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