Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a1e14a0c214ab3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 16:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc614977bc37bfba0072916433150cd6 SHA-1: fbc18a4670362097fec9e9843176915c21ef843c SHA-256: 30a1e14a0c214ab3d3f2bbab4ea3047ceb3559cd31bbe3c723f49aa3d29f8eba
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a high number of embedded links. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. Another critical heuristic indicated a PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting a potential SEO manipulation or content distribution scheme. The document body contains garbled text and a reference to a division worksheet, which appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=division+worksheet+for+4th+graders
    • http://files.sudermanmath.com/uploads/1/3/1/4/131438324/2e69ada.pdf
    • http://files.mingsgardenwillowglen.com/uploads/1/3/1/4/131437711/aba560894ec8b20.pdf
    • http://files.blessingrvpark.com/uploads/1/3/0/9/130969509/naridijufon-xobufufajom-demenaru-fafivefajuvin.pdf
    • http://rarag.bluestarcakes.net/uploads/1/3/0/9/130969723/ragusomukut-mijuxomus-dokopi-sobizorewoviki.pdf
    • http://files.julioespinosamusic.com/uploads/1/3/1/4/131437750/wowazofup.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/24093471441.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/5442626563.pdf
    • https://cdn.shopify.com/s/files/1/0433/2473/5643/files/gulusefogogifixamefole.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/cadette_woodworker_badge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/37646003471.pdf
    • https://cdn.shopify.com/s/files/1/0440/0126/3766/files/cd4017_ic.pdf
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/jejefulumivulilatog.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/personal_statement_examples_for_college.pdf
    • https://cdn.shopify.com/s/files/1/0440/6955/2293/files/57782270774.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_off000065dd.bin
a4a7bd13e4cf4ee135984f1bd3aeb0fe68cfb6afb400edaa5922d23bacd5940d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 5440 bytes
font_01_sfnt_off00007876.bin
2de26be38aac5cfb194c882b43716beda4e3fa99aae371ebcb61d3ea78b2ab5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10216 bytes

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