Malicious PDF — malware analysis report

Static analysis result for SHA-256 da994882a08a843e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-07 12:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c3154111ca43cdae3428018b59dc71 SHA-1: 23d100fcb222f8cf305d186dd4a831bd093e2dd1 SHA-256: da994882a08a843ed92004eceef3a4cba1fe4e172c91a3eb22a79d1e4b318d92
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Link

The PDF contains a prominent link that masquerades as a 'best pdf reader' update, a common social engineering tactic to trick users into clicking malicious URLs. The primary URL, https://ttraff.com/pify?keyword=best+pdf+reader+for+windows+10, is identified as a malicious redirector. The document also hosts a large number of external PDF links, many of which point to potentially malicious or unknown domains, suggesting a link farm for SEO poisoning or further distribution.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=best+pdf+reader+for+windows+10
    • http://files.goodeyemediaaz.com/uploads/1/3/1/4/131437362/futizet.pdf
    • http://fazoxarus.chrisbaxtersculptor.co.uk/uploads/1/3/0/7/130776791/vezuputoxotusuw_giwibawiv_vugitab_rorivube.pdf
    • http://files.comdataexchange.com/uploads/1/3/1/3/131380480/mitovigem.pdf
    • http://files.nc3family.org/uploads/1/3/0/8/130813577/6856812.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/ximadazugobusobiki.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/metro_pcs_rebate_status.pdf
    • https://cdn.shopify.com/s/files/1/0449/4390/0827/files/rabbit_anatomy_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/i_love_you_barney_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/vewozujokuzex.pdf
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/automatic_transmission_722._6.pdf
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/mibiwarusabezujasifawuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/92632994601.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/gesamubulexokepatovivul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/824972962.pdf
    • https://cdn.shopify.com/s/files/1/0431/2232/7706/files/the_ultimate_beginners_guide_to_digital_photography.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/52762630124.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_off00006e0c.bin
f09216c29faceb955b0f2f86c66618237bbdd0f9b548a4e2bfe29bed4c79694f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0C 5336 bytes
font_01_sfnt_off00008060.bin
9f61b91b64b18c6976bbc7686055b33d922352877686923df576a14466f49908
pdf-font-stream PDF embedded font (sfnt) at offset 0x8060 10048 bytes