Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ac2bdf6e178515…

MALICIOUS

PDF

60.1 KB Created: 2020-08-17 08:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88acedb32b1391e1beb7666ac4e0eba0 SHA-1: b222f9a517b3bcb36f02ef9cadab49c53c3307ab SHA-256: e1ac2bdf6e178515cfe660ba9be834c293622864bd1fbbcaf4c2501b6178b2d9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=icai+nov+2019+exam+date+sheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially corrupted, contains text related to exam dates and the wkhtmltopdf application, suggesting a lure to disguise the malicious redirection. The primary intent appears to be directing users to potentially harmful external sites.

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.ru/pify?keyword=icai+nov+2019+exam+date+sheet
    • http://files.potemkinreview.org/uploads/1/3/1/8/131871468/ec3ac03a8.pdf
    • http://mozef.wholesalebedsfurniturecentre.com/uploads/1/3/0/9/130969352/lelimizugupe-sisetixapu-tiraj-retemeve.pdf
    • http://wuzeseg.isoiso.dk/uploads/1/3/0/7/130740112/ruresonizajipi.pdf
    • http://files.practice-field.com/uploads/1/3/1/3/131383743/garulix.pdf
    • http://disebuzax.thepeacefulparadox.ca/uploads/1/3/2/8/132814930/xufumixidejudip-ninoma-nodetupap-nuvof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5604/5981/files/9436306818.pdf
    • https://cdn.shopify.com/s/files/1/0448/1440/1697/files/agadbam_nagara_sonyachi_jejuri_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8075/3058/files/sojub.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/fejijavek.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/saxip.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/90755040213.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/kavikipisapajamagujoso.pdf
    • https://cdn.shopify.com/s/files/1/0439/1511/6696/files/9931479426.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/gifaxativo.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_off00007fc3.bin
64bd5e09a5b159db441ce05fb57a3868ca40abaec4b1dbc262e258cc03d29a30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC3 5600 bytes
font_01_sfnt_off000092a5.bin
d97e055e11de589539a249dfdf9c15aca1e9caf4700104d1763a3a5d87d8f7f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x92A5 2320 bytes
font_02_sfnt_off00009cf7.bin
d3ff34a86d8bc74226e2674cf31b387d8664abe0fdb18d38812c76cb5927f895
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF7 15184 bytes
font_03_sfnt_off0000ccd3.bin
6985f2f0a4dd0176b5795bbc9f8514e665456f5a23a5dec04bdf67a68168a58b
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD3 16356 bytes