Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7feeb925285ad7…

MALICIOUS

PDF

48.4 KB Created: 2020-09-17 11:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2394c35dd09170a7e9492c9073f1721e SHA-1: 226ca86044c812f42d3a635829666d72d844e8bb SHA-256: da7feeb925285ad7c68bba4741cbc51de49ca8a771d6a24b78a84e95ce89d937
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a product manual, aiming to trick users into clicking it. The link leads to 'ttraff.club', which is flagged as malicious. The document also contains a large number of external links, characteristic of a link farm, further supporting the malicious intent. No scripts were extracted, but the PDF structure and embedded links 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.club/wix?keyword=husky+1.8+hp+20+gallon+air+compressor+manual
    • http://rulet.drcmullen.com/uploads/1/3/1/4/131409090/kabisuraren_wapimeligu_temibogapof.pdf
    • http://files.gatewayfarm.com/uploads/1/3/1/8/131871424/fbbbf12d.pdf
    • http://bupuj.lifeloveparenting.com/uploads/1/3/0/8/130874493/joxiduvoxevapadefox.pdf
    • http://mogaku.djccustomcrafts.com/uploads/1/3/1/6/131636664/9676488.pdf
    • http://files.carasoul.com/uploads/1/3/0/7/130776218/torasezofijikisa.pdf
    • https://3b0d5f92-d03b-476a-bc14-aad8e9f20e55.filesusr.com/ugd/8aba0c_2e93f9c2c54e4bf2bcd897b3f2e2d96a.pdf?index=true
    • https://7b7d7c14-35be-489c-9b8a-35c2c0c44a75.filesusr.com/ugd/a298ce_815e3a1d26c646c08eb20ca9cabd5a38.pdf?index=true
    • https://7d5e145c-6353-4389-b228-f76cb5bb4a49.filesusr.com/ugd/717a42_ff065c0b14f343c4a467f8fd094e6496.pdf?index=true
    • https://f817ebd8-ccb3-4fef-94f9-33d983cced34.filesusr.com/ugd/6c313a_5a6f7d9e31814bacbb36a9940fd922e5.pdf?index=true
    • https://9a03a6aa-a5cc-46d0-acc4-1f21af417508.filesusr.com/ugd/086daf_5dc92f6cfec8421688035ca72fb14600.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/9585/0150/files/dodotodexusenepibekoja.pdf
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/39210911786.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8123/files/rabige.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_off00007a79.bin
d1059011bacabe874d3c8e37ddde8ececa1eb3a11f7c2b788844a6bcbe870160
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A79 6028 bytes
font_01_sfnt_off00008eec.bin
4f9e2f39d21442af4a472d33e2a34e359c773e851a1ff53740f4974e7adc96c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 11084 bytes