Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc301fab1fca0b1…

MALICIOUS

PDF

45.5 KB Created: 2020-08-11 07:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e2ff5ac3df9d92dee19c6996085c1f5 SHA-1: fe3c8b05f62c14eb17672f34383c60ea92aa38e7 SHA-256: 6dc301fab1fca0b19c0e5fd2e2e79b12c45448f6d2707446496c3e7d5cbd63e8
154 Risk Score

Malware Insights

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

The PDF document contains embedded links that are identified as belonging to malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to a 'bootstrap css tutorial'. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm or SEO manipulation tactic, with the primary redirector being the most concerning IOC. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=bootstrap+css+tutorial+for+beginners+pdf
    • http://files.allthingswalking.com/uploads/1/3/1/4/131453114/545897b78bb.pdf
    • http://files.doula-care.com/uploads/1/3/1/3/131379420/2057198.pdf
    • http://files.wildharvestbotanicals.ca/uploads/1/3/0/7/130775537/sulamovejo_daduweve.pdf
    • http://files.chelsifryphotography.com/uploads/1/3/1/1/131164009/a239aa8cfd68.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/air_source_heat_pump_water_heater.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/67803427105.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/74850494663.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/69775002325.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/carbon_nanotubes_files.pdf
    • https://cdn.shopify.com/s/files/1/0433/0985/8984/files/nidamozatebit.pdf
    • https://cdn.shopify.com/s/files/1/0437/2519/3368/files/punibiladularufirulaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/silevowabonekoxosowufoso.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/bolupirovubewepaxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/92186053786.pdf
    • https://cdn.shopify.com/s/files/1/0434/8700/2790/files/96013718935.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/sinuzowuwodezari.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067a3.bin
ad4c65edfb7a5d06b9cdaf0be15ede18a6ee435260770f273cdcbe4df66d16be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A3 5512 bytes
font_01_sfnt_off00007a69.bin
b2d12b451f9e26e273cd087c2c1efb675cddeff10f85a7ac769d5c4828d41f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A69 14816 bytes

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