Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43ee50bd9110fa4…

MALICIOUS

PDF

52.3 KB Created: 2020-08-22 16:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f4440028ec1f3626fbaacc3d3e30ba8 SHA-1: 4085e34efb3321fd266420b1abee8b9b59f9842d SHA-256: b43ee50bd9110fa40c31dac31069f31de2600659e98da957702044992bcb069b
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also hosts a large number of links to other PDFs, likely for SEO poisoning to improve search engine ranking for malicious content. 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=sql+server+2012+feature+pack+page
    • http://buguti.pregnancylossinsilence.com/uploads/1/3/1/4/131406821/jisesivotaxo_wupipotatabexon.pdf
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/nyda_entrepreneurship_development_programme.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/zanudipi.pdf
    • https://cdn.shopify.com/s/files/1/0462/1248/1177/files/58108290081.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8703/files/temakaziz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/mufixik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/82548186924.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/ffxiv_leatherworker_quests.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/gidodok.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/sway_back_exercises.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_off0000884d.bin
68db1c082552fcf3f229e9a42fff6c7a52db9fc8b39f47221ecc66a6b95bdc9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884D 5864 bytes
font_01_sfnt_off00009c64.bin
a3ea02f7751a2e1f99e2be4ec157126e0f5b423f06ef5a891eef4e8543b9c44c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C64 12420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.