Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1a26621ce1a0a3…

MALICIOUS

PDF

38.5 KB Created: 2020-09-14 00:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fca143af5a9aaee4152ee65273ac8f5 SHA-1: b32d2bbd38f98a43cca47c6d972b9bab8b1f3ef9 SHA-256: 2b1a26621ce1a0a3f46fb2dba33b486f7d7344b1732fa3cbc1cd67572befe462
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a user manual for a 'Nuwave oven pro plus'. This redirector likely leads to further malicious content or exploits. The PDF also hosts a large number of other PDF links, many pointing to Shopify, suggesting a link farm for SEO poisoning or traffic generation. No scripts were extracted from this sample.

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.club/wix?keyword=nuwave+oven+pro+plus+user+manual
    • http://gojubarok.projecthealthycommunity.org/uploads/1/3/0/9/130969162/550e71211bd.pdf
    • http://files.indigorainstudio.com/uploads/1/3/1/3/131380728/bamozirajaso.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2509/files/30799767063.pdf
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/56876328473.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4101/files/votajakuvejosejukereri.pdf
    • https://static.usrfiles.com/ugd/3bf302_c01216d591624d0698b64edf505fd62f.pdf
    • https://static.usrfiles.com/ugd/485053_992c3d03a447466c922cd328c6d56075.pdf
    • https://static.usrfiles.com/ugd/52b593_f090292875754dd794b8ea449cc1439d.pdf
    • https://static.usrfiles.com/ugd/b8c837_35b3df30f59144bd813ef3a35f5a57cd.pdf
    • https://static.usrfiles.com/ugd/9b5f63_82eff7aa6ea44bdcb64836f7c98f8392.pdf
    • https://static.usrfiles.com/ugd/7e6083_c8e8874452f34e3595230c9b4996215f.pdf
    • https://static.usrfiles.com/ugd/9cb927_4b786972f9bb46ec8a294aed53bb0fc6.pdf
    • https://static.usrfiles.com/ugd/7836c9_982f482731fa456b86c6e4997487f5f4.pdf
    • https://static.usrfiles.com/ugd/ade4e6_4651afba83ef4e0095019308fab81611.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_off00005cb7.bin
71b49accd8b64420d7f2110c88c4896bbe7fad42db385d866569252441a3a2d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 5088 bytes
font_01_sfnt_off00006e05.bin
d5ba941e76b872b84c16d9d8cee0f3b7cf54a92a1a20255b5611327f1dad0af0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E05 9168 bytes