Malicious PDF — malware analysis report

Static analysis result for SHA-256 294b01fd33a53e01…

MALICIOUS

PDF

44.9 KB Created: 2020-08-12 21:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3fd6b729d6ab9698fa5bfcb79b4244c SHA-1: 6e1c2c6a0ce7a3594c75463540c5f1e2bacd2324 SHA-256: 294b01fd33a53e01ef1ed59b5580e6217e6e5a101fcf14e96721bec401c26df3
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and numerous other links, suggesting a link farm or redirection strategy. The primary malicious IOC is the ttraff.com redirector URL.

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/wb?keyword=carl%20orff%20schulwerk%20pdf
    • http://files.titanwrestlinginstitute.com/uploads/1/3/0/7/130740189/29ba8d65faa5a.pdf
    • http://files.crowfootguitars.com/uploads/1/3/0/8/130874587/52b5c4.pdf
    • http://files.twigny.com/uploads/1/3/0/7/130776609/tenotusoje-bidesalevuzod-rarodos-miwijaseziku.pdf
    • http://bobav.philipdoddy.net/uploads/1/3/0/9/130969204/kezasudewonalo_feniru.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/antimicrobial_activity_of_neem.pdf
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/54787790832.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/redatu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5483/3564/files/sq8_mini_camera_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/xajomedaxepibafewona.pdf
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/tavilewun.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/tiruxat.pdf
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/4588926285.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/fokewufilipodalesasox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/14779471486.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/foritavikakovarepef.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/pumojururig.pdf
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/todd_lammle_ccna.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/innotech_dog_fence.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_off000071e8.bin
e9c26013ddd3401af4011435783e83b2d685d45607929a66f9e6d8949b7ece1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E8 5304 bytes
font_01_sfnt_off000083fe.bin
1d9f57a0ed4e81086ab11ec9364af7904d14b31f5c3876f37b8ad9cdb4d57e67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FE 10176 bytes

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