Malicious PDF — malware analysis report

Static analysis result for SHA-256 59db1297fbd25a67…

MALICIOUS

PDF

40.6 KB Created: 2020-08-03 00:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d15f73b47b201b467f23f8c94889e21 SHA-1: 1f9571c2ac4b0b8c8b13c68028738588ec421499 SHA-256: 59db1297fbd25a6700a13a93f06faa2344630d073d05a9ecf216717d9a82b36d
152 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.cc/pify?keyword=jojo+menacing+generator', points to a known malicious redirector. The document appears to be a link farm, likely designed to distribute malware or conduct phishing attacks by directing users to malicious sites.

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=jojo+menacing+generator
    • http://files.mnsa.org/uploads/1/3/2/7/132740234/337970c.pdf
    • http://putur.banglesbydemetra.com/uploads/1/3/0/7/130738615/nutaxitelofosurad.pdf
    • http://files.grantcountyinfair.com/uploads/1/3/1/4/131453021/zowujosib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/puwale.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/21769291751.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/86108062461.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/98680907612.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/daft_punk_around_the_world_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/goxizimimamo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/words_ending_in_ness.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/kurexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/38501458061.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/23768252311.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_off00005649.bin
cefa8d5f4905a55a0bc527414bea976b1a43edf5dac017468715c2ff2cc7896d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5649 3032 bytes
font_01_sfnt_off0000610d.bin
9147b4c63f92fd5a46fc15fd83f8f38083924c548b56996e3a73cea64c644d41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 4976 bytes
font_02_sfnt_off000071e7.bin
6a1529fb6379f7cdc821d87204774d89a421349b93a67c4633352b2b3ec48571		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 10344 bytes

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