Malicious PDF — malware analysis report

Static analysis result for SHA-256 34978ed5f8c218ea…

MALICIOUS

PDF

48.1 KB Created: 2020-08-17 18:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 076a25c1b74b54d24b8612eac15af6f1 SHA-1: ca5f1e0a72fbaa5be837901dc22ea10896b63071 SHA-256: 34978ed5f8c218ea11e272b317ff7063dba065466924cf3694220eef9a1589fa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including one pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=apatite+formation+definition
    • http://zileju.beckybillock.org/uploads/1/3/0/7/130738946/kejadefifivi_ponenarinagilup.pdf
    • http://files.wpadistrict18aa.org/uploads/1/3/0/7/130775398/2d4bd6f02.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/paxewobavixivod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/91755814607.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1125/files/64162464966.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/3658111493.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/punopodod.pdf
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/36801344369.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/calendario_2019_per.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/79121112735.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/supernatural_journal.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cc0.bin
6ac0cd5a79d2eaec0d68d22abe965775511bc54eeb834f0bc5f88a134d7e466b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC0 4968 bytes
font_01_sfnt_off00008d8a.bin
916802482f8695acbf7692e855527221202d697f87898870527c312e67ea5ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8A 11292 bytes

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