Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf421bc0ca5c7dcb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 07:39:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0f439031e3faa6900d73d704bec2ed9 SHA-1: c053142c9868f5318de29ac80806d8ff4ca293a0 SHA-256: cf421bc0ca5c7dcbe444ab3275b3efa27c6971cc3aef03075bef8f866b8206f5
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is flagged as malicious. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be tricking the user into clicking the malicious link.

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=city+of+god+saint+augustine+pdf
    • http://files.katiehornphotography.com.au/uploads/1/3/2/6/132683140/364771.pdf
    • http://files.ryandavidbirdlarson.org/uploads/1/3/0/7/130739233/nilobirilaja.pdf
    • http://rotusamiz.flushingfutbolacademy.com/uploads/1/3/1/4/131483108/risezez.pdf
    • http://files.waggabeekeepers.com/uploads/1/3/0/7/130740444/nobozeranetolixaji.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0327/files/dojot.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/94055054881.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/kinetic_fluid_trainer.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/bifofizurik.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/glencoe_algebra_1_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/honda_company_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/vitamin_b12_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/i_751_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/vegese.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/tavakixuxawuxebosabuzame.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/xaxafivopep.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/gexelosafogisozutezupof.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/67815267469.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_off00006664.bin
22f77501b7e0bb1236cf0d44538059a3ddf7d0279af73bed5dd9d7fac9847503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 5088 bytes
font_01_sfnt_off000077dd.bin
64ef91c15f72629fb6f4ae37ec5009f8ac1546b43a50973ef32726a27677939b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 15196 bytes

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