Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f06438ae4ce550a…

MALICIOUS

PDF

46.4 KB Created: 2020-08-11 17:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e41ddcae2025390f539eccc702469e2f SHA-1: 287d8a2cfecf1d1a79b744e5e61715977243bb9a SHA-256: 1f06438ae4ce550a8f727538f9b0bc7406c839412852f1ddedd7cee0e69ffc51
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=pune+detailed+map+pdf'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, suggesting a link farm or redirection strategy. 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.com/pify?keyword=pune+detailed+map+pdf
    • http://files.samwang.com.au/uploads/1/3/1/3/131380687/voxokagiwefetel.pdf
    • http://files.southwestiowadentalassociates.com/uploads/1/3/0/8/130813108/xatemojegovuwiv.pdf
    • http://files.lochgoin.com/uploads/1/3/2/7/132740536/6af758.pdf
    • http://files.bayareahomeschoolfair.com/uploads/1/3/1/3/131383771/jutaboxiwov.pdf
    • http://files.rekajellema.com/uploads/1/3/0/7/130739789/1f03a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/lepawibuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/pocket_sand_gif.pdf
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/michigan_sportsman_forums_ice_fishing.pdf
    • https://cdn.shopify.com/s/files/1/0431/8861/7378/files/il_perfetto_greco.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/76644187262.pdf
    • https://cdn.shopify.com/s/files/1/0432/2672/6568/files/zoology_practical_viva_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/9623/4400/files/77171659503.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/toni_bambara_the_lesson.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/23521727897.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/sobipawok.pdf
    • https://cdn.shopify.com/s/files/1/0432/1637/1867/files/nejomobodagopekutem.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/ruxatosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/sesoxetokabokavi.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_off00006d9d.bin
967fa74616977d586d539bac7907c13191c86ba964bf0550b376d2250da961c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9D 4916 bytes
font_01_sfnt_off00007e49.bin
f0997b36cfda9d24fcf43b51311ff75966f9f432a281461b9c78a04fa2ba68c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 15040 bytes

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