Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4be0fced7e28fe…

MALICIOUS

PDF

54.7 KB Created: 2020-08-31 05:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f0bc985aa002b7a12c34f7f31aa3e2 SHA-1: 795ea7d7a7242e81ee0799db30fc6879713e7e5d SHA-256: 7d4be0fced7e28fe050ea4173d61ec838c5822eb7ddb4039d71e4d6c8d35b30c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. Another heuristic flags a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the primary purpose is to lure users to malicious 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.cc/wix?keyword=zte+axon+7+waterproof
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/pivifokosenarejakaminina.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/gezavegalekotamek.pdf
    • https://cdn.shopify.com/s/files/1/0433/1703/5166/files/barbarian_5e_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/game_design_document.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/477715313.pdf
    • https://static.usrfiles.com/ugd/b8c837_99ab475b41a142b8b91bf48faf579473.pdf
    • https://static.usrfiles.com/ugd/79e5df_d06b47e4aa7e49d8b7f2d63c45377128.pdf
    • https://static.usrfiles.com/ugd/de02f3_0e1f15356add461b91c033cfa2bde797.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd09ff8b39dc45ffbba8d63e1564af44.pdf
    • https://static.usrfiles.com/ugd/0bcf16_93a7354e664b4741a0710e5563485d24.pdf
    • https://static.usrfiles.com/ugd/b28561_1e3a00701546440190510a21cff05139.pdf
    • https://cdn.shopify.com/s/files/1/0439/6200/7710/files/kemogudad.pdf
    • https://cdn.shopify.com/s/files/1/0447/4650/6391/files/academic_english_book_unisa.pdf
    • https://cdn.shopify.com/s/files/1/0454/2965/3660/files/9739901252.pdf
    • https://cdn.shopify.com/s/files/1/0436/2236/7390/files/59683603757.pdf
    • https://cdn.shopify.com/s/files/1/0464/7996/6360/files/paul_enrique_espinosa_osterloh.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_off000098c8.bin
756c8ce3cf539b72b55d72503adb35937fad297d8966c0a1cc341922c3e9618a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C8 4880 bytes
font_01_sfnt_off0000a99a.bin
e6db1121b4ccaccf75ef43fa0b7c46927089ee98d34565feab0ad002e668bc9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA99A 10788 bytes

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