Malicious PDF — malware analysis report

Static analysis result for SHA-256 f211498da95414b6…

MALICIOUS

PDF

47.4 KB Created: 2020-08-04 19:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8654ff9168e795ed7313272f02eff5c SHA-1: 7ebc3d25fb5bacbf8bd00f11fa5d3e240c93ecb0 SHA-256: f211498da95414b66919f2e23c07c955e660ec73ae3d1615d6b5df1640235362
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'pdf to word converter' and the malicious URL. This suggests a social engineering lure to redirect users to potentially harmful content.

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.cc/pify?keyword=pdf+to+word+converter+online+free+no+email
    • http://files.theissuenewsletter.com/uploads/1/3/1/3/131382808/vafogiragiwub.pdf
    • http://xalibovex.franciscreekranch.com/uploads/1/3/0/9/130969440/6131986.pdf
    • http://xujuxom.bankruptcysolo.com/uploads/1/3/0/8/130874524/4076329.pdf
    • http://files.tcsocalbaseball.com/uploads/1/3/0/7/130739509/2286162.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1110/files/final_fantasy_tactics_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/pusukosidapopuvajawugaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/67465884970.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/lewitikimafo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/66081908530.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/zikovonutajixavexovefaxar.pdf
    • https://cdn.shopify.com/s/files/1/0438/2746/2301/files/country_code_94.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/96398288629.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/getting_things_done_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/618172507.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/99573601002.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/obs_flv_to_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/46799576923.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_off00007b5e.bin
843e094f55b126e00f8ac5b695ba0accf431c44556c0e745fad91c2f9624babe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5E 5140 bytes
font_01_sfnt_off00008cda.bin
d332c812cffddcb8619a2d34f8761c67a2a72743e3d82e930f754e875873eeaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 10372 bytes