Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0ea037f754f3ac…

MALICIOUS

PDF

40.9 KB Created: 2020-08-09 06:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e84c9fdd9f90afa8afb199dcbff2569 SHA-1: 9afe78b01e08b52eb82093ff6b9f3152ce96cfcc SHA-256: 0f0ea037f754f3acb4693878e76528859b8a1c7e8c850bea049d78f8750ae52a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains multiple URLs, many pointing to Shopify, suggesting a link farm or SEO manipulation tactic. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=mathematical+physics+satya+prakash+pdf+download
    • http://files.dangribben.com/uploads/1/3/2/6/132681773/5360399.pdf
    • http://files.ashwoodfertilitycare.com/uploads/1/3/1/3/131379099/tozawilefuru.pdf
    • http://debubege.warlockwardrobe.com/uploads/1/3/1/1/131164250/6356422.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/zukatogotelenofurodofodu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/zejupagabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/72288822280.pdf
    • https://cdn.shopify.com/s/files/1/0432/8187/5112/files/weight_training_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/38925702491.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/nawerez.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/wugano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/xolofopopulasefewizowab.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/42000742796.pdf
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/dusiwijevexiput.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/80695797226.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055b1.bin
da210028ffb34fd09c0ab94ac17779c8d01218963181d77bf392cb08ccb9e5fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x55B1 5656 bytes
font_01_sfnt_off000068e6.bin
37db70cdfa70820a9d61c7db3d2f71d81fe4ab11b5fdab2dba77a1a6ec02930b
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 14284 bytes