Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce7ee5e928e9f97…

MALICIOUS

PDF

35.8 KB Created: 2020-08-29 23:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b48a92103dc8db4e92ebae0be1c30dd SHA-1: 70225454b34956eebadefcc9e818027cac392ac0 SHA-256: 9ce7ee5e928e9f97108e3f149dfec64203c9a4650f74aed9236ad0ad40f1aa34
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=final+fantasy+android+apk'. This URL is presented as a download link for 'final fantasy android apk' within the document body, indicating a social engineering lure. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=final+fantasy+android+apk
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/mebowupepilufarabiteze.pdf
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/64784448422.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/10429425574.pdf
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/74036717238.pdf
    • https://static.usrfiles.com/ugd/f1780b_467fa4a7b111456e885041491f97d734.pdf
    • https://static.usrfiles.com/ugd/ca300b_81392dcdfae34c5591e37df2d702bde3.pdf
    • https://static.usrfiles.com/ugd/b8c837_09707cfa0bb54c12837234a613fb6263.pdf
    • https://static.usrfiles.com/ugd/f103bb_397150778d0742df80279693d47f1322.pdf
    • https://static.usrfiles.com/ugd/7d21c0_580815d6a0d64af4bc28cc14795f11da.pdf
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/4484930316.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/pikawilisawo.pdf
    • https://cdn.shopify.com/s/files/1/0468/0338/6517/files/15141332633.pdf
    • https://cdn.shopify.com/s/files/1/0431/5607/8758/files/amritsar_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/odd_and_even_numbers_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/1572381543.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/u1p-_7_battery.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_off00004f48.bin
3153e2fa780520fb03ce573e983ca4843159dbd01e805f555675a21c11426b33
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F48 5156 bytes
font_01_sfnt_off000060eb.bin
3893c44630817590ab7115ddea7d655eb7ad6b50ca243b2d420ef383522e8ccb
pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 9832 bytes