Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd2cbb1ef59a09c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-14 02:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f6f7fc42b942b5f1f8d8d28512cc335 SHA-1: d9275023b18e017867af41be084e71c1fab84864 SHA-256: 2dd2cbb1ef59a09c74a15932c8710b938517dd5210dd9158e5c7ebf3d9b3e3bc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=12+marksheet+hsc+2019'. This URL is presented within the document body, suggesting a social engineering lure. The file also contains a large number of external PDF links, many hosted on shopify.com, which is flagged as a link farm. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=12+marksheet+hsc+2019
    • http://files.knightgallerie.com/uploads/1/3/1/0/131070762/4466875.pdf
    • http://lokax.squidflip.com/uploads/1/3/1/4/131483152/gavutigiginerepebi.pdf
    • http://xebividew.artisticframingspokane.com/uploads/1/3/0/7/130739415/sajetatabuleturisa.pdf
    • http://surafowi.simplykimberlysblog.com/uploads/1/3/1/3/131380600/majoxaxutupeb-zulodod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/wibuvironelamumapid.pdf
    • https://cdn.shopify.com/s/files/1/0436/5081/0014/files/25232290197.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/23574691625.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/65932487377.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7927/files/95628101413.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/41117452342.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/loxazasaba.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/gravity_forms_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/wemaminoxotodafogufutani.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/breadman_tr800_manual.pdf
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/anorexia_nervosa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/breath_of_fire_3_prima_guide.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_off0000635a.bin
8af6609ac73279898fbbfc0cae5e66c97bef6953dec68d561567210107fe004e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 5460 bytes
font_01_sfnt_off000075bb.bin
02d40046035991b5110f85cb9164ee44107c0acbfa6c5e580e6bc71e2cebafd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BB 10676 bytes

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