Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e9e378da44b39f…

MALICIOUS

PDF

59.4 KB Created: 2020-09-07 06:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0f1ec2c6cce13de8bf09a997e1e8a01 SHA-1: 1d30af37e4af69648872772463672c105a548446 SHA-256: 07e9e378da44b39fee6146daac8084af1534593bb1597d743bc48eb8086264f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other platforms, forming a link farm. One prominent link, 'https://ttraff.club/wix?keyword=sherlock+holmes+1+movie++in+telugu', is identified as a malicious redirector. This suggests the document is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.club/wix?keyword=sherlock+holmes+1+movie++in+telugu
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2707/1130/files/54647938806.pdf
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/koxatuwelotevivumizetovon.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/68433031438.pdf
    • https://static.usrfiles.com/ugd/278743_4c4a19d193104312a6894779a4e5ed96.pdf
    • https://static.usrfiles.com/ugd/33a2e4_6e7fe8b273324c1e95d0142869d37373.pdf
    • https://static.usrfiles.com/ugd/2eec94_eb6c88ce7ad642a991d9d952430e5007.pdf
    • https://static.usrfiles.com/ugd/a2e20a_871cb37bf3014759b1c4c3af47804105.pdf
    • https://static.usrfiles.com/ugd/838e7e_009face35d8f48a4abf4062221de5c6d.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5409/files/66024640731.pdf
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/french_protestants_were_known_as_answers._com.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7138/files/79880971909.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/towekumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/japanese_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/zutizalu.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_off00009d0a.bin
0e8a607a5aa651ab8362706c14347da07106e0ac3a61f44df81f8d14669453ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0A 5164 bytes
font_01_sfnt_off0000ae7e.bin
6230ec5c8c694ac1bfb582d20e83769f0d167141079460e26b0bfcb28919087d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7E 10652 bytes
font_02_sfnt_off0000d2f1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F1 4324 bytes

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