Malicious PDF — malware analysis report

Static analysis result for SHA-256 3681942c5a268cfe…

MALICIOUS

PDF

48.7 KB Created: 2020-08-04 13:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0c596e45cd89f310bd456e28c756282 SHA-1: 46507fda9fe0acade093a7d2f78b114c71c0205a SHA-256: 3681942c5a268cfefe41d1fbe0dddcd1542907fdba0b8f84473bb2ed6aac1c49
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This link is embedded within the document body, suggesting a social engineering lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify and appear to be generated SEO content. The primary malicious URL is 'https://ttraff.cc/pify?keyword=the+investigators+of+arkham+horror+book+pdf', which likely serves as a gateway to further malicious content.

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=the+investigators+of+arkham+horror+book+pdf
    • http://pepika.cfkayakrace.com/uploads/1/3/2/6/132681443/kinapijovilebepaja.pdf
    • http://files.lcrtoa.com/uploads/1/3/0/8/130874316/8569262.pdf
    • http://files.meyanahotel.com/uploads/1/3/2/8/132815342/lodane.pdf
    • http://files.fwdskillzone.com/uploads/1/3/1/4/131453907/48ba82f20513.pdf
    • http://files.fattees-printing.com/uploads/1/3/0/9/130969448/687e03ad3f.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0434/1586/3463/files/bapepidinavijaxalemijipop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajomuxufukurojudi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/nazuda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/meravufukodudawiza.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/sivasizab.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/difudulif.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/17619551365.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/79864301758.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9631/files/how_to_give_minecraft_more_memory.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/vujasaruzukogajina.pdf
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/62763980604.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/26805166820.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/factor_variable_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/diet_for_celiac_disease.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_off00007ed5.bin
0f82b7bbe194ea93cefdaa80e41c3f35fea5729a32e157cd7a0ed23843d10af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED5 5636 bytes
font_01_sfnt_off000091d4.bin
29f317fe02b598869e05cf9fb77e98256462157f7752882eaeacc385ee03e664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D4 10324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.