Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05727be5658d726…

MALICIOUS

PDF

49.7 KB Created: 2020-08-02 21:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dbed7e18458f81e2292ecad470e4175 SHA-1: 98837d782b3f99e0e9e0efaa356b63f79799fd39 SHA-256: e05727be5658d72638f465d74c4dc7c403cc577df14fbb5acbb5db65bd933b22
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a Toyota maintenance schedule. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the lure text and the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or distributing further malicious content.

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.cc/pify?keyword=toyota+tacoma+maintenance+schedule
    • http://files.saraniedzwiecki.com/uploads/1/3/1/4/131453226/dizofuxut.pdf
    • http://files.nmoc.co.uk/uploads/1/3/1/3/131383727/vaxemomurewipi.pdf
    • http://files.novanuae.com/uploads/1/3/0/7/130740349/7f2086460.pdf
    • http://files.alden43dressblue.com/uploads/1/3/1/4/131437029/rekazubilepilega.pdf
    • http://files.euroforestireland.ie/uploads/1/3/2/7/132740375/8acf2134e28b511.pdf
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/2890809033.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/jopiboramifijebuzuxumi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/53239097957.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/rufadabuniwibotakugamedo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/10957016944.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/tefezebixuwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/womaxomemezadevavufulodur.pdf
    • https://cdn.shopify.com/s/files/1/0432/7102/8896/files/54906149077.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/sotuvavudokapibopoxoxige.pdf
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/64362336372.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/24166792074.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062ee.bin
526c1e778d87a2b8ce7abcc4da478c0409b3304d7cf597276fe089c1d709b867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 5016 bytes
font_01_sfnt_off000073cf.bin
0c41e40ed1d201da99a2c3aad3ae35e58152bd72b1936b7483e9ffb1629cf12f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CF 10144 bytes
font_02_sfnt_off000096be.bin
2906e013a2c12f8438753706de5a20d0a45d34478d649377d82f29cc76ae0543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96BE 16108 bytes
font_03_sfnt_off0000ab6a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6A 4324 bytes

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