Malicious PDF — malware analysis report

Static analysis result for SHA-256 302af70db03d13ed…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 22:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0af12393e162bf2072c02b28c4de62ec SHA-1: 9187609bec1e4d40990f4df92ea9a43c95092646 SHA-256: 302af70db03d13ed1f110f6cb92a3ef56fa33c5c76b5736e3d9a3fc4e4c6f916
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.com/pify?keyword=cheap+large+format+digital+camera. The document body, though heavily obfuscated, appears to contain text related to product listings, suggesting a lure to entice users to click the malicious link. The presence of many Shopify-hosted PDF links, some flagged as benign and others unknown, indicates a link farm strategy to obscure the malicious destination.

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=cheap+large+format+digital+camera
    • http://files.gaslogbbq.com/uploads/1/3/1/3/131382841/lilivelibovem.pdf
    • http://jifuki.artistmarnie.com/uploads/1/3/0/7/130739664/262e12.pdf
    • http://sesonu.pinchaschemsite.com/uploads/1/3/0/8/130874218/mexopa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/rawurilufija.pdf
    • https://cdn.shopify.com/s/files/1/0437/7722/8957/files/18150985478.pdf
    • https://cdn.shopify.com/s/files/1/0437/0418/9096/files/reporters_without_borders_singapore.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1885060089.pdf
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/definition_of_cardiovascular_disease.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/63771292771.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/nubonep.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4260/files/83198944334.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6241/files/anthropology_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0460/7918/0964/files/attagasam_songs_free_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/free_printable_monthly_business_expense_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607c.bin
ef66112cdeb5129101151f60c738aa5ed8fc916ab295a29baa14274290d36090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 5096 bytes
font_01_sfnt_off000071da.bin
f0cdc017c1fd8c04f90d44e76a3ea9da2079ab252ca0ac3b805d73e2ec045b94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 10168 bytes
font_02_sfnt_off0000946c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x946C 4324 bytes

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