Malicious PDF — malware analysis report

Static analysis result for SHA-256 654fff95f47616a3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 01:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 200312953e7c5cefe58a4ca020bdbae9 SHA-1: 0ad99895411e843642ff5180b4464ea201935a68 SHA-256: 654fff95f47616a3f6b4818f3ef6fffe833a4c7d0f60308040fe679c1326fd00
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary malicious URL identified is a redirector, suggesting an attempt to obscure the final destination. The document's content and structure strongly indicate a phishing or scam attempt, leveraging a seemingly official document title to entice clicks.

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=emoluments+attachment+order+template
    • http://zosov.sankofaoutreach.org/uploads/1/3/2/3/132303382/7548871.pdf
    • http://paposi.sticksstonesandsweettea.com/uploads/1/3/2/6/132695636/71cdf9fa843214.pdf
    • http://files.jodieoneill.com/uploads/1/3/1/6/131606402/6315159.pdf
    • http://files.hilltowns.org/uploads/1/3/2/8/132815003/piguterozizagebabat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/3511/3110/files/free_boat_bill_of_sale_template_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/36539995947.pdf
    • https://cdn.shopify.com/s/files/1/0440/3740/6870/files/84493959147.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/bilateral_independent_periodic_lateralized_epileptiform_discharges.pdf
    • https://cdn.shopify.com/s/files/1/0445/4517/9807/files/adodb_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/38673173731.pdf
    • https://cdn.shopify.com/s/files/1/0429/6540/1753/files/tobijazade.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/96616007231.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/granada_albeniz_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/cover_letter_copy_and_paste_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/6899451290.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_off0000701b.bin
6c428fc4a2b443f9b1b1e44f1338477b43b5f19e035ad3ddd5ec45b81d937cbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 5268 bytes
font_01_sfnt_off000081d2.bin
714964c7e2d99b8edb52a9d66fdbdd43498da1a3ad6ca21ff28cc40cfcfbaf0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 9992 bytes

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