Malicious PDF — malware analysis report

Static analysis result for SHA-256 2744deb675482a69…

MALICIOUS

PDF

48.4 KB Created: 2020-08-18 23:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7ab6f1c1af366d79087a875027a02b8 SHA-1: 748ebc40ad48a85e6e156606e4f786115f7080b6 SHA-256: 2744deb675482a69ecfa2f2972a02938b8443b97e356a10102aa5d310f62f757
152 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains multiple heuristics indicating malicious intent. Specifically, it features a link farm with 12 external PDF links, one of which points to a known malicious redirector at 'https://ttraff.com/pify?keyword=capability+statement+template+doc'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links to potentially benign Shopify PDFs alongside the malicious redirector suggests an attempt to blend in or mask malicious activity.

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=capability+statement+template+doc
    • http://xuvos.totalbodyfusion.shop/uploads/1/3/1/6/131606624/7705510.pdf
    • http://robumadon.brentwoodmochamber.com/uploads/1/3/0/7/130775732/mebepod.pdf
    • http://donipazax.tiffestival.com/uploads/1/3/1/4/131407057/muwitizi.pdf
    • http://files.purerockcolours.com/uploads/1/3/0/8/130873856/kugenefav-samadifegufupu-muzilawi-devafujavobemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9127/files/tutorial_autocad_map_3d.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1639/files/springfield_college_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7345/files/canalyzer_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/lafuvibilavizut.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/iehp_prior_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/twin_xl_fitted_sheets_500_thread_count.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/47855437022.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/
    • https://cdn.shopify.com

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000748d.bin
934ae7b0cde6529a4066f5a5af71a7303565e55d95b30b68936cb3e1ee0bfac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748D 5176 bytes
font_01_sfnt_off0000860f.bin
edda1eb0d5a1bfe212074d89997d7680a14b7956ff9f661fa3333a3c4aab77d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x860F 9552 bytes
font_02_sfnt_off0000a690.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA690 4324 bytes

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