Malicious PDF — malware analysis report

Static analysis result for SHA-256 8644d3bbf00bab89…

MALICIOUS

PDF

45.9 KB Created: 2020-08-06 08:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3fbf8de35224728c68cf3511981b5ef SHA-1: 47dcc324a18b52bba8ee709916553661b7caeb0b SHA-256: 8644d3bbf00bab897487ff980c73585f8e83bbebc7312e04e6b5589e7fd1cbd8
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=basic+computer+engineering+sanjay+silakari+pdf', which is likely intended to lead the user to malicious content. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=basic+computer+engineering+sanjay+silakari+pdf
    • http://lenabat.responsivelaw.org/uploads/1/3/1/4/131408024/biwadoga.pdf
    • http://files.guideturisticheancona.com/uploads/1/3/1/1/131164063/nelumumonedes.pdf
    • http://files.infinityscarvesbyjanet.com/uploads/1/3/1/3/131380337/724f7728.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/ruxomuwemifafiworo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/63214664180.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/firitukibovawadub.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/336879325.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/dododurabafuzerawen.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/56305714525.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/zevop.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/39578084287.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6117/files/56811530478.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005046.bin
6a227a6bdf96d3a09cab8dc154c417752c12979d594b722101724ffbda9d66e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5046 5648 bytes
font_01_sfnt_off00006368.bin
8324efb562228aee20cbedcf2e1372c2bb13d9a72d88ff7c000ceac57e79a622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6368 10592 bytes
font_02_sfnt_off000086ed.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86ED 16164 bytes
font_03_sfnt_off00009c05.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C05 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.