Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90553fb7d12056c…

MALICIOUS

PDF

55.1 KB Created: 2020-08-12 18:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e9d420e6bc2520575cca89cfccc9d0b SHA-1: 4f1a184977c4b2c0ec9d4d85adb6d99c11bf8060 SHA-256: f90553fb7d12056c13bc102a03d55e32eaf49d6026670cc4108454cc68ed6e56
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to Shopify domains, but one critical link redirects to `ttraff.com`. This domain is flagged as a malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'ssc logical reasoning questions pdf', suggesting a lure to trick users into downloading or accessing malicious content under the guise of educational material. The presence of a link farm and a malicious redirector strongly suggests a phishing or content-luring attack pattern.

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=ssc+logical+reasoning+questions+pdf
    • http://files.williebjwilliams.com/uploads/1/3/1/4/131438217/7d128f.pdf
    • http://bovajobil.tourwithxuan.com/uploads/1/3/0/8/130814328/xoteviboga.pdf
    • http://wepijoz.glassexpressions.in/uploads/1/3/1/0/131070374/3200748.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/742434427.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/86442100774.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/luperufevikuvikaruvimumuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/33467785837.pdf
    • https://cdn.shopify.com/s/files/1/0431/7868/8663/files/55940785959.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/bsc_3rd_year_maths_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/kafuwotun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95181885481.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/11137977278.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6726/files/kafobofijatamejolarabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/ranejomikev.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/6351535921.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007135.bin
ee8c37d65ee1b0abc40bb8247808a53394eabd845f3fa5043826376134b3998f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7135 5552 bytes
font_01_sfnt_off0000840d.bin
d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x840D 3720 bytes
font_02_sfnt_off00008f71.bin
83e67384c0391118e2b0222f964dddfb7b89e7d64dddd4d4671155e39c9f265b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F71 11004 bytes
font_03_sfnt_off0000b4f7.bin
891b62c9068c065acdb6f46d1adb58c2cb4bacbfd1f000af32e229af34fa5ef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F7 7444 bytes

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