Malicious PDF — malware analysis report

Static analysis result for SHA-256 130361009feb89b4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 00:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61bc48a319f2f4cccafdf28baa02cc25 SHA-1: 6c617614b064f61edb26b4d7c8364d3c7d94b3bb SHA-256: 130361009feb89b40082a888d3a8e04e27ed39da66e7f705d4a0e532f57ab9bb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.ru/wix?keyword=lead+me+home+jamey+johnson', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious infrastructure. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attack.

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.ru/wix?keyword=lead+me+home+jamey+johnson
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/philosophers_stone_wow.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/ibm_blockchain_supply_chain.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5754/files/49132898530.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/67370219944.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1996/files/4463563641.pdf
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/wafedoxogovajewodowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/butap.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0306/files/rilopetukitaliba.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/37992733119.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf4ad27db42240518856e10e857cc8b2.pdf
    • https://static.usrfiles.com/ugd/93c935_f667f13238b640e7bf96fbaf168f5f3c.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_off00005216.bin
c7c5949c5783caa8d76972142a6e10dd26c1cbcfc51a409c9a5ae823e71a7fab
pdf-font-stream PDF embedded font (sfnt) at offset 0x5216 4716 bytes
font_01_sfnt_off000061fe.bin
f6315bcad36538160ad8ed043f1b165bbd553ea28d8d7d72e099e1b64384612e
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 10020 bytes
font_02_sfnt_off0000841a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x841A 4324 bytes