Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70296a99b2d18ac…

MALICIOUS

PDF

45.9 KB Created: 2020-09-01 14:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30a59200df61ad8f7a24dbd2891db462 SHA-1: dd8bc7396264981a276a8bad65c53a3849a6535e SHA-256: b70296a99b2d18ac152a07148743c6f2ab08c11fa0973f935f275ca919d27570
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to the malicious redirector ttraff.com. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=critical+ops+game++pc, reinforcing the malicious intent. 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.com/wix?keyword=critical+ops+game++pc
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/nrsv_catholic_bible_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8417/5773/files/michelle_beatles_piano_chords.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/73940985099.pdf
    • https://cdn.shopify.com/s/files/1/0433/4118/5189/files/finaxaligomolisiruzoganov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/7270178530.pdf
    • https://static.usrfiles.com/ugd/078c79_2073ef8400bc423f9843964fe55edb8d.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_550a2cf2a6cf4d1c90ee34a499af7ff3.pdf
    • https://static.usrfiles.com/ugd/50c35f_3911b6142ac24b78bcafc41d16003347.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c206f1c44d043f999a4bb4ab4a159e7.pdf
    • https://static.usrfiles.com/ugd/4c1554_43c15572b9594428bc8883cc4e35f7a7.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_64b0a629a32b413bb9b8cff7de1a48a9.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_64e58b0104bd4aadb43172fd07eb2629.pdf
    • https://static.usrfiles.com/ugd/d01287_fbed905c66034f09ad736ceb65928bd0.pdf
    • https://static.usrfiles.com/ugd/cfa91a_1c1940afb69545eabb317e303f0b70db.pdf
    • https://static.usrfiles.com/ugd/efb3f0_75d6650074cb4e5ea822b31115b8b7fe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/bebosajiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/adipex_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/novegirenovejujuxed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006944.bin
f6676625201fa82f82e23be9274c12ef94807b0fd7606647a332445596e52c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 4956 bytes
font_01_sfnt_off00007a20.bin
a9a983c5fbedf9948c9da90315bae657114bc1f69777d928d37781c6c4e29544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 10168 bytes
font_02_sfnt_off00009cca.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCA 4324 bytes

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