Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c68e89f1ec3791f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 22:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f3684fcc4d6b0d154776e00308399c8 SHA-1: a4aa557194206f013c11c6663f697729e4b6471c SHA-256: 4c68e89f1ec3791f22e71a14f9b7d5fd21ee531b8f087a0f5115b6d38a5dbaa7
152 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body and metadata suggest a lure related to 'Awas Yojana form apply online', indicating a phishing or scam attempt. The presence of a malicious redirector URL is a strong indicator of malicious intent, likely to lead the user to a further stage of attack.

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=awas+yojana+form+apply+online
    • http://files.inthyme-dod.com/uploads/1/3/1/3/131397987/loludutosapufom.pdf
    • https://cdn.shopify.com/s/files/1/0448/0057/3601/files/god_answers_our_prayers_bible_verse.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/62081412897.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/network_security_basics.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/93056143604.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/zuvinovekimupirubizuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/77071991423.pdf
    • https://cdn.shopify.com/s/files/1/0431/7616/5536/files/71390627836.pdf
    • https://cdn.shopify.com/s/files/1/0438/5836/2518/files/vekel.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/85563523656.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.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_off000066da.bin
3b8c8b544c6cfe136ca24dc995a2d2710c86c393021ac5592e1f41a807447640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 5308 bytes
font_01_sfnt_off000078ed.bin
0ad24546fdcc1a0c5cefcdcd52b44d325b54a984e994c04b42efc372d05ccc56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 10396 bytes

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