Malicious PDF — malware analysis report

Static analysis result for SHA-256 27485c7370b5838a…

MALICIOUS

PDF

43.1 KB Created: 2020-10-03 16:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: afb7a442cfdf4e0119116c799c59b46d SHA-1: 5ca2235747e8d3da6d28b339668c46c5b7e8fb02 SHA-256: 27485c7370b5838a07c2716288b6530358db6f37d996497594c4c4a891175b99
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a malicious redirector disguised as a live stream for a sports game, which is a common lure for phishing or malware distribution. The document body itself contains obfuscated text and multiple URLs, including the primary malicious one, suggesting an attempt to direct users to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.club/pify?keyword=patriots+chiefs+game+live+stream In PDF document text
    • http://files.thenuttgallery.com/uploads/1/3/1/4/131438038/manupujufumesuwijavo.pdfIn PDF document text
    • http://pudad.abbigailrichardsmakeup.co.uk/uploads/1/3/1/3/131381067/855ccdf2946e970.pdfIn PDF document text
    • http://tobetune.communitymomentum.org/uploads/1/3/1/3/131378985/dedidumov-luxujitumavem-xigesukijaxo.pdfIn PDF document text
    • http://pomejel.petershenkinlaw.com/uploads/1/3/0/7/130739860/wimawuwimovimidaruro.pdfIn PDF document text
    • http://xomijopo.tdbusinessventuresinc.com/uploads/1/3/2/8/132814261/4333716.pdfIn PDF document text
    • http://zirukino.bsakoaks.com/uploads/1/3/2/8/132814930/vopadogod.pdfIn PDF document text
    • http://zemut.3gatewaycenter.com/uploads/1/3/1/4/131483229/48fe653203.pdfIn PDF document text
    • http://files.knoxcrc.org/uploads/1/3/2/6/132681342/3025119.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/catia_mechanism_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0460/2779/files/76455080542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6245/0586/files/wedabovak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/task_force_black_iraq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6771/4983/files/metal_cock_ring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4968/0028/files/47662824070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1714/3973/files/paw_patrol_beach_game_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2209/3983/files/wuzakobesojugoxa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 5356 bytes
SHA-256: 4bcaf7dddf2903ba54b7dd64d2e9e4b36ae3455fefb4cd77efa8959525f73c90
font_01_sfnt_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 10292 bytes
SHA-256: 59b1583f271a9b7576aa5e0085e8e7974fff8153d747eef2ec80dcfa4f6f31c5

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