Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11d6a01290e31d4…

MALICIOUS

PDF

41.9 KB Created: 2020-09-19 06:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8530dc2bc76500454bb0b2cae9d3ca9a SHA-1: caed0c02adc6864489693db5a15569bae899bb65 SHA-256: a11d6a01290e31d44efadff09f45a3c6e69634afe17a054a019625d90a1e7c14
120 Risk Score

Malware Insights

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

The PDF contains a deceptive document body referencing 'Flight simulator x steam manual' and embeds multiple external links. One critical heuristic identified a PDF link to known malicious redirector infrastructure at 'https://ttraff.link/wix?keyword=flight+simulator+x+steam+manual'. Another heuristic noted a PDF link farm, with the first URL being 'https://6740b1a5-c204-4a29-a2db-8e6806155eeb.filesusr.com/ugd/6290de_40647c9e2be1423c97322c8f294611b7.pdf?index=true'. The presence of these links suggests a phishing or social engineering attempt to redirect users to malicious content.

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.link/wix?keyword=flight+simulator+x+steam+manual
    • https://6740b1a5-c204-4a29-a2db-8e6806155eeb.filesusr.com/ugd/6290de_40647c9e2be1423c97322c8f294611b7.pdf?index=true
    • https://afa12b85-272c-4ccd-bce3-dbf82a1ee152.filesusr.com/ugd/81cd61_58567147cfd048ebb8b0d59ef51436a7.pdf?index=true
    • https://733ad5e1-17ec-49f4-81e1-a3d7e58f3336.filesusr.com/ugd/32777b_3a9712aa627e4e4baca5a59fd4a06c4d.pdf?index=true
    • https://c3437203-4623-466d-8e3e-90cd28e6253a.filesusr.com/ugd/384ea4_a8e588c2024e492e8b7c46c685205d47.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/6324/4960/files/medicare_part_d_formulary_2020.pdf
    • https://cdn.shopify.com/s/files/1/0462/0360/1049/files/classification_of_living_things_worksheet_8th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3934/files/91741188594.pdf
    • https://cdn.shopify.com/s/files/1/0435/0715/5110/files/94617084879.pdf
    • https://39721e53-cb1b-48cb-a065-04c2488c3ee2.filesusr.com/ugd/4aae87_6de4ac8e10694abbaa2e2fbdb09c1b32.pdf?index=true
    • https://cd7e10ef-4cc7-405d-912d-9b1f13c16783.filesusr.com/ugd/008e52_5297c4156b5e493cb37d919bfd980489.pdf?index=true
    • https://3066b962-9e8b-4ff1-9635-9e04055533e5.filesusr.com/ugd/738632_5ff277d06eba40a7b674d40ec84c9981.pdf?index=true
    • https://65d46725-386d-40cf-a381-3894d85b503f.filesusr.com/ugd/95ea6b_582aa1cd4e2f4c0da215d9727ae59216.pdf?index=true
    • 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_off00004d7a.bin
4ec4817e398c0d9d1ce65c0256e526c31b49bcac7f8978fadd775c03cdbc6708
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7A 5124 bytes
font_01_sfnt_off00005ebe.bin
c4838f309c00e2c4e8f5a760d9c02cd4fc319037d53f0782d6b73b21c9a72e5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBE 10348 bytes
font_02_sfnt_off0000824c.bin
be0e5c8645f5ad8cc206db131d64e21f441ff599cca08188427509f2e2f30136
pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 17332 bytes