Malicious PDF — malware analysis report

Static analysis result for SHA-256 4264c669d899edb8…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 06:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f2a99ca615d015aee27b1ffac28e1d1 SHA-1: 38f432ced029c3f971887e4a4e68df27ab67c803 SHA-256: 4264c669d899edb8622c53cadf529196b029dbe70f1ec87427cad43a4d5958fe
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a link farm and a specific redirector URL that is flagged as malicious. The document body text, though heavily obfuscated, contains the search query 'angular material form example github' and the malicious redirector URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to distribute malicious content.

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.cc/pify?keyword=angular+material+form+example+github
    • http://wudaxu.awordontheword.tv/uploads/1/3/1/6/131606746/8845636.pdf
    • http://files.mermaidinforeignwaters.com/uploads/1/3/2/3/132302871/2031a79c1.pdf
    • http://jevifajip.yogawithteresa.net/uploads/1/3/1/3/131397970/jopiwevamedulusis.pdf
    • http://files.bethchrismanmusic.com/uploads/1/3/0/7/130775391/2753426.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/lesson_3._1_synonyms_and_antonyms_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/nasamot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4851/7275/files/best_free_apps_2019_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/admin_clerk_duties.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdf
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/nuxiwepurefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/bamevejeduvesolumot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/72321615215.pdf
    • https://cdn.shopify.com/s/files/1/0450/4364/6614/files/chapter_17_section_1_italy_birthplace_of_the_renaissance.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_off000066bb.bin
4ec6aa1b7c9c3f33e005175322839b5c3f4ea5309e766d043cee78699cf50adb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 5336 bytes
font_01_sfnt_off000078b6.bin
b4b58bcf4e37f8960c6812c4a604abf3860b650939e5aedbee4a44d160fd2550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B6 10644 bytes

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