Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe48affb5bb3f090…

MALICIOUS

PDF

43.4 KB Created: 2020-08-12 22:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b97b734fe18f499e914eb0043e22e98 SHA-1: 3f8565acd77ad18d1aa7769ce13f4ee4a83878c3 SHA-256: fe48affb5bb3f09076547322d2e6734ff78ebc80f094aa4e27781778a73471ff
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to host malicious content. One critical heuristic firing indicates a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though partially corrupted, contains text related to 'user acceptance test plan pdf', suggesting a lure to trick users into clicking the malicious links.

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=user+acceptance+test+plan+pdf
    • http://files.taconiterocks.com/uploads/1/3/1/4/131453945/125475.pdf
    • http://bupag.foothillsbeagleclub.com/uploads/1/3/0/7/130775380/wanuwal-zixadi-nigoxujitut.pdf
    • http://rezularak.nouvellegraphicdesign.com/uploads/1/3/1/1/131164110/mudigol-popetop.pdf
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/ti-_30xa_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4463/2738/files/pannes_diagnostics_auto.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/mass_effect_2_zaeed_dlc.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2129/files/50652705807.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/41398549902.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/63155296930.pdf
    • https://cdn.shopify.com/s/files/1/0455/7858/4229/files/sociology_syllabus_for_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/litukev.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/cavernoma_cerebral.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/62147543826.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.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_off00006d35.bin
bdac6496384684be7fe496ee972fe11d927c3726f15bf9daed458229880e3ed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D35 5140 bytes
font_01_sfnt_off00007ec1.bin
8f6a38a6f3878d6def97767b4ca206763f87f0f1bc320d50f2651dc561c9a229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC1 10004 bytes

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