Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51808e3549c38a9…

MALICIOUS

PDF

37.2 KB Created: 2020-07-31 23:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a60e5cf4bfcb78f59cf34c266c3dd7d8 SHA-1: 61480b4007547c454eadd3335272c7dedbb6443a SHA-256: e51808e3549c38a99014595797aff096210afa64e685469e17827133130e865e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to a high number of embedded links, many pointing to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body, though partially corrupted, contains text related to song lyrics and references to the redirector URL, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=if+i+was+your+vampire+lyrics In PDF document text
    • http://files.shaneproductions.com/uploads/1/3/2/6/132681391/gidabewarazu.pdfIn PDF document text
    • http://files.handwritingmyway.com/uploads/1/3/2/6/132695629/8be579ca.pdfIn PDF document text
    • http://files.stroseperry.com/uploads/1/3/1/4/131453818/gojuga.pdfIn PDF document text
    • http://files.orderbruces.com/uploads/1/3/1/1/131164399/9042276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/89159884000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/zodoxate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/24975980505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/zalenigukazitapofepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5864/0549/files/54801600851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/87974977863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/36244137192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2328/5920/files/meforuromelipigawinarip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3917/0466/files/vetefonewuwowugew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/laxidovarenepibemowaweluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3478/5430/files/nikosumodaxukofoniridupep.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005476.bin
774ae3f3ac4f083b79a39954dee1a1df994891c39db22269c01bd393b8449a36
pdf-font-stream PDF embedded font (sfnt) at offset 0x5476 5352 bytes
font_01_sfnt_off000066b2.bin
926182d81fb4f6be55f83439d822f9ba03803203d0cd727a0b24970847cc4436
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B2 9768 bytes