Malicious PDF — malware analysis report

Static analysis result for SHA-256 f826b3176ad6cc45…

MALICIOUS

PDF

43.2 KB Created: 2020-08-24 02:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b37ffd4948c7b9584acc1801be764d2 SHA-1: 9f880955abdfe8b96591c6fa95ba02aa59be6742 SHA-256: f826b3176ad6cc45bccf17db0b443b7ac66d874db66d0077fe3e1610a34f63ad
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=ajax+tutorial+pdf+for+beginners'. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The document body, though partially corrupted, also contains this URL, reinforcing the malicious intent. The presence of multiple SEO-like links suggests an attempt to mask the malicious redirector within a larger link farm.

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=ajax+tutorial+pdf+for+beginners
    • http://gejuwoxe.saclegalprep.com/uploads/1/3/2/7/132712237/buridulof-nofusavuselazi-fetimowas.pdf
    • http://files.rpmcustomlures.com/uploads/1/3/1/6/131637374/42945.pdf
    • http://files.poboyswheelsource.com/uploads/1/3/0/7/130776823/jimuratimonifun.pdf
    • http://files.brainybirdcreations.com/uploads/1/3/2/7/132740260/5352073.pdf
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/91045288379.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/wildgame_innovations_trail_camera_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/49102733195.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/85270466285.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/analysing_data_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5395/files/lajemimetepuzuroki.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/rowenil.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/cannizzaro_reaction_mechanism.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/pifuta.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/rulitanagonukajobidujefi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/rain_bird_sprinkler_system_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/gawezavuwukibowaxude.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_off00006a3a.bin
ad9472fa9f9396761eb40fe334e2dead27c6db589cb322d7a146b901770c59fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3A 5480 bytes
font_01_sfnt_off00007cf5.bin
05b912e1ab8a3abce0d6c4516c16e62c33ad0ac476f22af763d1ba3e39822b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF5 10128 bytes

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