Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2621972182288c…

MALICIOUS

PDF

54.9 KB Created: 2020-08-18 23:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b87366091a73fb6572c7d41556d690fd SHA-1: d2e03fe800775093899bfbf75c5b02d8831195b9 SHA-256: fa2621972182288cebd69c179b8cff344fa7c767d1a2d8614e06986117375c0a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a URL designed to lure users with a 'cheap youth cheer uniform packages' keyword. The document body, though heavily corrupted, also contains this URL and references to Shopify links, suggesting a phishing or scam attempt. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious redirector.

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.com/pify?keyword=cheap+youth+cheer+uniform+packages
    • http://files.niakohimura.com/uploads/1/3/0/7/130776220/pogapenub-sepupefedugu-pabafi.pdf
    • http://nezusux.lodgeyggdrasill.com/uploads/1/3/0/8/130873791/1180418.pdf
    • http://duxam.danielleozymandias.com/uploads/1/3/0/7/130776106/fuganutug.pdf
    • http://mepofez.empowerunit.org/uploads/1/3/1/4/131407148/luxuzimanidege_sezagizolefedad_pulovozib_funusu.pdf
    • http://bikaf.cakarst.com/uploads/1/3/0/7/130739059/fuziti_tiwikumor_wimej_namanuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2604/6362/files/l_atomistique_cours.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/rezukisilifuvunewuwig.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/carol_of_the_bells_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/0405/8010/files/16406943541.pdf
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/components_of_computer_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/28030722601.pdf
    • https://cdn.shopify.com/s/files/1/0429/4213/6476/files/gubekobukexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/mepagubujifofukerosisudu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/gerafifozawevowibanijab.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/buffer_solution_calculation_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005af4.bin
3cad6c444e6eb1d31f6156be9344c07061e35088985b873b24c600a9654ec142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF4 3292 bytes
font_01_sfnt_off00006680.bin
9db5090c661f178c14c755f41fe83992c73862a7380c9345c66cb1dbb6869466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6680 5468 bytes
font_02_sfnt_off000078fb.bin
34eb269886a2c2b8b13934a629c8a5ff3ba7dca607e62054a980a16373f1dc25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FB 5200 bytes
font_03_sfnt_off00008b90.bin
a5ac73c282c4404b93c214ec94c989cc453b3125356f99ccfaad45bbeaa4f7ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B90 10940 bytes
font_04_sfnt_off0000b10d.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB10D 16036 bytes
font_05_sfnt_off0000c565.bin
5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC565 1736 bytes

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