Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d202f118092fe4d…

MALICIOUS

PDF

46.6 KB Created: 2020-08-21 06:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deb7326736fe4665d4916550efba2080 SHA-1: f068c26382f3b60d3faf67217984ddc71a2f5705 SHA-256: 3d202f118092fe4df59e8be333cec886cb8799181d3309a798444554b9c4abb2
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cargo+full+movie+zombie'. This URL is designed to lure users into clicking, likely leading to further malicious content or downloads. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious.

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=cargo+full+movie+zombie
    • http://diwabumi.nicolauswriting.com/uploads/1/3/0/7/130739919/sosetozilotejuzutuw.pdf
    • http://files.hinsdaleracquetgang.com/uploads/1/3/1/4/131407227/bde8be6e5.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/flexible_sheet_metal_working.pdf
    • https://cdn.shopify.com/s/files/1/0436/0853/9299/files/laxafodorawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/15151625814.pdf
    • https://cdn.shopify.com/s/files/1/0436/9491/5738/files/pedaxutumulivavabadiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/86130432035.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/73297402105.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/tuwavujidujidum.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/modern_england_history.pdf
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/zojubifalaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/fomitiroretizulamiweto.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/xiviwodiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/xaritosokukamoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/34793695845.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_off0000789a.bin
1046c7bd26fa231c88eae959c1970b1277a6332cc1be7b4cb7d7c76bde288983
pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 5064 bytes
font_01_sfnt_off000089d9.bin
50aa32c2828472995476873a6c5acf189eef00982f56732009291743ffc30c86
pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 10540 bytes