Malicious PDF — malware analysis report

Static analysis result for SHA-256 1143f5bb33c65a6f…

MALICIOUS

PDF

44.3 KB Created: 2020-07-28 16:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 303ecdb00e4599848bfab8b75475c195 SHA-1: 3752cff17b488a2fc579fb98ac863f8b08df38d2 SHA-256: 1143f5bb33c65a6f19783ac9454092aa27af35fafd5beadd0efd4143a8d01547
162 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 likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to reporting a car accident, amplified by urgency language. The presence of numerous links to PDFs hosted on Shopify and other file-sharing services indicates a link farm designed to distribute malicious content or obscure the true 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=reporting+car+accident+after+24+hours
    • http://files.teambirths.com/uploads/1/3/0/7/130775002/tazabir.pdf
    • http://files.soulsisterapothecary.com/uploads/1/3/0/7/130739697/8759503.pdf
    • http://files.beckydolleycpa.com/uploads/1/3/1/3/131383541/munarumirar-datadi-pivapiw.pdf
    • http://files.kccreekranchevents.com/uploads/1/3/1/3/131383297/begevubawusidukofaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/54932071958.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/72162712527.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/lefuvagonefudaxifirifepuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/53628422390.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/tivolonup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumuwajufutoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/6041/1033/files/59076986182.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/47756639587.pdf
    • https://cdn.shopify.com/s/files/1/0432/7440/3996/files/lanumupovuje.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/wakovafajimawot.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/74653087782.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_off00006ed0.bin
4d057dd278ed213fc23b69eae1c47ef4dac7d987d7509c395589d12d868b9c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED0 5496 bytes
font_01_sfnt_off00008186.bin
8725b556ff6471ca00cee6ac9af80f86091b3132759601070ee08b2b6dca9756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8186 10056 bytes

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