Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce3f68f6113d841…

MALICIOUS

PDF

44.5 KB Created: 2020-08-28 06:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f135e8c5063423c6e3c37addb9d91f7f SHA-1: a1c1e51b770a0630f5194383d1d00e3f48f6f195 SHA-256: 3ce3f68f6113d841e200438e390f4aaac78c1b5b906c32302e6e94a53c7253e3
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.com/pify?keyword=%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B3%25D1%2582%25D0%25B0+%25D0%25B2%25D0%25B0%25D0%25B9+%25D1%2581%25D0%25B8%25D1%2582%25D0%25B8+%25D0%25BD%25D0%25B0+%25D0%25B0%25D0%25BD%25D0%25B4%25D1%2580%25D0%25BE%25D0%25B8%25D0%25B4+%25D0%25B1%25D0%25B5%25D0%25B7`. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDFs, many hosted on `cdn.shopify.com`. The primary malicious link likely serves as a gateway to further malicious content or phishing pages. No scripts were extracted, and the document body was heavily obfuscated.

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=%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B3%25D1%2582%25D0%25B0+%25D0%25B2%25D0%25B0%25D0%25B9+%25D1%2581%25D0%25B8%25D1%2582%25D0%25B8+%25D0%25BD%25D0%25B0+%25D0%25B0%25D0%25BD%25D0%25B4%25D1%2580%25D0%25BE%25D0%25B8%25D0%25B4+%25D0%25B1%25D0%25B5%25D0%25B7
    • http://files.artofyiannipasamihalis.com/uploads/1/3/2/8/132815343/fajagukorofopuwa.pdf
    • http://wejuzu.construction-lines.com/uploads/1/3/0/8/130813030/lewugete.pdf
    • http://files.heavenbeam.com/uploads/1/3/1/4/131438397/vogerasa.pdf
    • http://sazipe.arizonatennisacademy.com/uploads/1/3/1/4/131407995/temolive_pozekirib.pdf
    • http://files.thejansenandrahbekcollection.com/uploads/1/3/1/6/131637881/df4fe8d0.pdf
    • https://cdn.shopify.com/s/files/1/0438/5921/4496/files/ikea_pax_wardrobe_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/52782506228.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/99649438621.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6887/files/clinical_trials_terminology.pdf
    • https://cdn.shopify.com/s/files/1/0436/4589/4816/files/536715631.pdf
    • https://cdn.shopify.com/s/files/1/0435/7314/9859/files/zamemefajev.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/full_hd_movie_site_bollywood.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/canada_post_envelopes_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/investment_association_pre-_emption_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/11953998090.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/91250014899.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_off00006068.bin
79312f63de53f346c58c5c14daeb36883d09775170e5e470c49a30df536346b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 6036 bytes
font_01_sfnt_off00007417.bin
801bebddb903932d500d7f692ec68f1e0ceecaae73d404cb598a9a0e139e5320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 14856 bytes

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