Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc17f51e877962e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-18 21:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 694abecc9f809d5891a7250ae2617890 SHA-1: 32a15fb33ab1a3abe34402131367ef37072a12ba SHA-256: 9cc17f51e877962e6ad7d56323cfb5e9ecdc0c0a54a7d7b4a252aaa51cfb0188
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, which points to 'https://ttraff.ru/pify?keyword=masker+innisfree+sheet+mask+untuk+jerawat'. This URL is presented within the document body, likely as a lure to trick users into clicking it. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious URL. No scripts were extracted, but the presence of a malicious redirector and the link farm strategy indicate a phishing or scam attempt.

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=masker+innisfree+sheet+mask+untuk+jerawat
    • http://files.jrpnyc.com/uploads/1/3/2/6/132695372/8401951.pdf
    • http://files.allnationscoast.net/uploads/1/3/1/8/131857419/vuwewo.pdf
    • http://files.letstrythat.ca/uploads/1/3/0/7/130739684/03950c0e12.pdf
    • http://files.jftm-fit.com/uploads/1/3/0/8/130873893/d03d8815f.pdf
    • http://files.bluestone406.net/uploads/1/3/0/8/130814397/raridina_vidigurum_nawoxur_roteruxosalega.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/12871924891.pdf
    • https://cdn.shopify.com/s/files/1/0436/1961/4882/files/xumuzexugeropo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/tixamipulawuxagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0985/files/xuragojujeweroveviwarobe.pdf
    • https://cdn.shopify.com/s/files/1/0441/0186/1528/files/oxford_bookworms_library_level_2_sherlock_holmes_short_stories.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/64426760357.pdf
    • https://cdn.shopify.com/s/files/1/0449/8613/8792/files/programa_arquitectonico_estadios.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/18156852108.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/80755890913.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5237/files/gujexizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.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_off00007980.bin
734acc1b9b149c5f3911cdb486b3752ed8ae7fa945f513e7a390bf7f416f3b04
pdf-font-stream PDF embedded font (sfnt) at offset 0x7980 5212 bytes
font_01_sfnt_off00008b27.bin
9e39c826f6b36f977abacb84c66d2ce1393a119f37a7106aa86810920f80a976
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B27 10128 bytes