Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfbaf65418a261e3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 16:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b349a575f3e2c9ed209e259acbceba SHA-1: 20ccd0d1c1429fb26d5dd7d0b4fba45d96ab86b6 SHA-256: dfbaf65418a261e3e99947c82fdb1002806d7368624d079a4aee13abbc43c278
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to a "happy brother day whatsapp status video" and the malicious URL, suggesting a social engineering lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, likely as part of an SEO link farm to obscure the malicious redirector.

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.com/pify?keyword=happy+brother+day+whatsapp+status+video
    • http://files.yodopay.com/uploads/1/3/2/3/132303248/1602960.pdf
    • http://files.mycmississauga.com/uploads/1/3/1/0/131070151/kexivenapi-pupoximejakaw-timasanajojogi-vazum.pdf
    • http://jefuzajir.theindestructiblesbook.com/uploads/1/3/1/0/131071164/851367.pdf
    • http://files.graceguy.org/uploads/1/3/0/8/130813747/1594049.pdf
    • http://files.thebookcatchers.com/uploads/1/3/1/4/131454109/fativetinugi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2962/6013/files/13582777643.pdf
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/xesav.pdf
    • https://cdn.shopify.com/s/files/1/0429/6425/4883/files/73266988502.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/83005554741.pdf
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/xagusafibawujukud.pdf
    • https://cdn.shopify.com/s/files/1/0428/8187/6131/files/64935335289.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/60538756634.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/werirap.pdf
    • https://cdn.shopify.com/s/files/1/0453/2695/8747/files/2019_calendar_template_canada_word.pdf
    • https://cdn.shopify.com/s/files/1/0436/0830/9923/files/nixogolodajemotinadikun.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_off00005fd1.bin
d6c5a609737172ed2af6bfebbc70af2475b7d40fb9e582d59c1f3638385b309c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD1 5372 bytes
font_01_sfnt_off0000721f.bin
169b256559741f0c6362ccfa143e749b34b5bde388328631c5941ad14c7e0e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721F 9984 bytes

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