Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f2609c46bc26c3…

MALICIOUS

PDF

45.1 KB Created: 2020-08-02 05:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07f6600c70b78900cb93842d66bb2f08 SHA-1: cbc8320e4f2a12d64a179bec7fa7d7966b0ba772 SHA-256: f6f2609c46bc26c34c2edb94d81e8fbde223d0984ba938d6a558bac53ac7d5cc
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.com'. This indicates a phishing or scam attempt where the user is directed to a malicious website under the guise of downloading a document. The ML classifier strongly supports the malicious nature of this PDF. 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/pify?keyword=business+law+principles+and+practices+pdf
    • http://files.abaofillinois.org/uploads/1/3/1/4/131454603/5206dade21346.pdf
    • http://files.1stprescorning.org/uploads/1/3/1/4/131483336/1588164.pdf
    • http://files.rubiniart.com/uploads/1/3/1/3/131382092/wufakomigebajik-nagudukodisosaz-kosipuvuno.pdf
    • http://files.nascarnumbersite.org/uploads/1/3/0/7/130740573/lofomazitoxomokivu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/61981475886.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/pegewomuxawedaxapesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/melufixisabizudodojesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/91491204924.pdf
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/37383433049.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/52768596915.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/6876021097.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/semimovimutapirugise.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/78142330733.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/vefajisoxazinilajirex.pdf
    • https://cdn.shopify.com/s/files/1/0430/2539/9971/files/33941495539.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_off00006532.bin
75ce7f7e1688bde888548764b876e4bd83e378917aa93abd7a99c8409abb5fc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5060 bytes
font_01_sfnt_off0000767d.bin
100fa2388b13a7fed5e1842517e28c6d5de8ea10c50e311ae96986c74bf01ed1
pdf-font-stream PDF embedded font (sfnt) at offset 0x767D 10244 bytes
font_02_sfnt_off0000993b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x993B 4324 bytes