Malicious PDF — malware analysis report

Static analysis result for SHA-256 00afa636e309d36d…

MALICIOUS

PDF

44.3 KB Created: 2020-08-10 08:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b767cf28854d49dba1b87f0a3979e9f SHA-1: 3eaebb9810e60dd1eb8617e6ba6b1609aa3cfa64 SHA-256: 00afa636e309d36d3bb9b95abe253d93d64dc5d4019a5057f25fc3c30678676b
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.com/pify?keyword=kubernetes+documentation+pdf, which is likely used to redirect users to further malicious content.

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=kubernetes+documentation+pdf
    • http://files.smokedearthceramics.com/uploads/1/3/1/8/131871787/pivolanawapejagemugo.pdf
    • http://sobivemu.communityoff-road.com/uploads/1/3/0/8/130814328/0d0686be77f18.pdf
    • http://wafawiv.janellecox.com/uploads/1/3/0/8/130874493/90635e80c2ae3.pdf
    • http://files.wwgirlsbasketball.com/uploads/1/3/1/8/131857465/f9d060.pdf
    • http://files.daleismopeners.com/uploads/1/3/1/3/131383255/jemale.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/lateral_thinking_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/zotokogukope.pdf
    • https://cdn.shopify.com/s/files/1/0433/8833/8330/files/26524815961.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/19854324153.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/pifojasi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7925/1608/files/fimojikinifirenitu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8945/files/72666809563.pdf
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/kutimunabosu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/46338078298.pdf
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/auditing_and_assurance_services_pearson.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/39063520253.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/icd_10_klasyfikacja_zaburze_psychicznych_i_zaburze_zachowania.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006291.bin
277998ace26fa1b04bb35b1946d6204f1c00d0a35698194469565df48dcb47c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6291 3520 bytes
font_01_sfnt_off00006f1f.bin
45e3b9427753e58dd9869e9289500c23b5b2e39b39f5fe9db6d231c7c92c74c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1F 5376 bytes
font_02_sfnt_off0000814c.bin
e1c6af6ca66931cd8ac2407fb82a505872fcfd48188d9803d002ba1377b803cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 10184 bytes

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