Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e5f707b6e4fbb6…

MALICIOUS

PDF

54.5 KB Created: 2020-09-20 14:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a189483a0b005194c42f60c21a9794c4 SHA-1: af14d64e4d68a54405f1340f2fedc2acb68f9422 SHA-256: 83e5f707b6e4fbb672941ef578b8c12c805f60e8fe3532dcbd6b4c7f778db4b9
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Zenonia 5 item guide' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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.club/wix?keyword=zenonia+5+item+guide
    • http://dejela.ebcentre.co.nz/uploads/1/3/1/4/131453096/57814.pdf
    • http://jikaguto.thelightersideofme.com/uploads/1/3/1/4/131406082/divuxupan-wejek-boruk.pdf
    • http://desil.thegreenmedicineshop.com/uploads/1/3/0/8/130814328/logakip_vares_kegazajezuri.pdf
    • https://8a1e6ae2-ebd0-42ff-81f1-aa09327db2e0.filesusr.com/ugd/c618e9_9f32622e1ba948df83fb41bd33ad1402.pdf?index=true
    • https://9ec9a29a-070b-4231-8f83-11cc5e0f6556.filesusr.com/ugd/934fc3_a8e59d9cf24a4770a763b296d00d3ab4.pdf?index=true
    • https://332e11d9-f5ba-4e93-a3d1-3b64eb68f826.filesusr.com/ugd/d162e3_21513c8ed8264176bc7318216fc32ef7.pdf?index=true
    • https://96724dc2-0cb0-4505-816b-fd39921fcc1c.filesusr.com/ugd/787b0a_6ddf758c4601474c8d79876c5d978cd8.pdf?index=true
    • https://5f74e65a-6cfd-452f-8500-f4818285e581.filesusr.com/ugd/2c608b_e14a6bff496648cd9c4ab8a57d729a80.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/cg_video_song_hdvidz.pdf
    • https://cdn.shopify.com/s/files/1/0484/8222/2230/files/th8110r1008_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/98847762075.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/17837559835.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/85520221603.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_off00008fa8.bin
766bcba33dc9b1845cf7704da6364974d824e4b327d39840a0c950c91fafd297		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA8 4920 bytes
font_01_sfnt_off0000a05c.bin
987e3eff952b14651ffbcb3f855b491898875db99f0036208e09c360f9360717		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA05C 14800 bytes

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