Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e6e14c841dfa3d2…

MALICIOUS

PDF

43.8 KB Created: 2020-08-13 15:34:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 773e5afc536e42907b294d1e2b845ac2 SHA-1: 336a57973b3d55215a0d2c66b11ae2d989e96841 SHA-256: 8e6e14c841dfa3d22b4d093a7ffeee36dfbbc89d584c03ed81b9064c81df1384
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO spam. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, reinforcing the lure of academic or book content to mask malicious activity.

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=andreas+vesalius+de+humani+corporis+fabrica+pdf
    • http://files.libera-translations.com/uploads/1/3/1/8/131871568/vitenawap.pdf
    • http://files.homefromhomechildcarers.co.uk/uploads/1/3/0/8/130873840/xawepoko.pdf
    • http://files.thirstforknowledge.ca/uploads/1/3/1/0/131070173/afdff8cc.pdf
    • http://files.ingerlene.net/uploads/1/3/1/4/131407364/fenidisawelumebuwin.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6948/files/the_5th_wave_book_series.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/zogofudifuxolefirulif.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/ripadanifututavuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35031547028.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/anatomy_and_physiology_of_liver_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/9900/0737/files/command_prompt_windows_10_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/15375776742.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/britax_b_agile_stroller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8787/9587/files/tanafowazadesiran.pdf
    • https://cdn.shopify.com/s/files/1/0433/4154/5626/files/39622710172.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/jatakesijimididezanaz.pdf
    • https://cdn.shopify.com/s/files/1/0443/1210/1020/files/animal_farm_york_notes.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_off0000674c.bin
a6502bbbea59348bafc467ed0d07a2504a73f38e269613b3d408e2da2bdf6d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x674C 5584 bytes
font_01_sfnt_off00007a13.bin
ad5517e30f4abd9a66c4c9619549cf58b2c7c00cccd01510237b485805d62cb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A13 12532 bytes

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