Malicious PDF — malware analysis report

Static analysis result for SHA-256 002b32e0b2396c43…

MALICIOUS

PDF

37.9 KB Created: 2020-08-28 04:10:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c63207340c4e1285db06a0dc4d75ac90 SHA-1: 5bb68bbfcbda4971cae70280a6300aa9b608585b SHA-256: 002b32e0b2396c4336a4bdb1bebedff1dd9489e06c504b0c5720d5089a54f885
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.com', identified as a malicious redirector. This suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=under+the+sea+sheet+music+alto+sax
    • http://files.el-musafir.com/uploads/1/3/0/9/130969061/totigid-banodapon.pdf
    • http://files.stephentlintner.com/uploads/1/3/1/3/131383586/podowetulunekaja.pdf
    • http://lafirisu.littlestdetail.com/uploads/1/3/2/6/132682883/veleru-xukiruvun-mamolim-marojopa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/43349933014.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/puvelowavotuno.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0051/files/5755488390.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5266/files/revefokovuzotew.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/aperture_priority_camera_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/1749109066.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/95345727463.pdf
    • https://cdn.shopify.com/s/files/1/0428/1987/9068/files/krishna_bhagwan_ka_gana.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/41380618258.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048a8.bin
fac2ee53b2f3cea4ec3ec2de16a196259f7c908b5288997204e1ad2f9aa60830
pdf-font-stream PDF embedded font (sfnt) at offset 0x48A8 5120 bytes
font_01_sfnt_off000059e6.bin
2e3aaf068c7c0877158acccf456aeb608785a4d08738100d8ec63eca83f318df
pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 10124 bytes
font_02_sfnt_off00007cb4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 4324 bytes