Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0fcc9dd85243b6…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 13:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae309e5fb7314a611a960dc687ca6f15 SHA-1: 69f00740855bccac4fe87e77fdea3e25b66616b5 SHA-256: 7c0fcc9dd85243b6de080a8d5998f5e00c36e840b249ed42c7bd9fe69a776c20
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'Gravitational force and field worksheet' and includes the same malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. The primary malicious URL is likely intended to lead the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=gravitational+force+and+field+worksheet
    • http://files.silverjinnstudios.com/uploads/1/3/1/3/131381003/4268570.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/arduino_uno_r3_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/printable_paper_house_craft_templates.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/bavogakanazokilonif.pdf
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/buxuro.pdf
    • https://cdn.shopify.com/s/files/1/0447/3955/9573/files/muwakobimevamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/91077284378.pdf
    • https://cdn.shopify.com/s/files/1/0444/3337/5399/files/bazezilajijivaxomepilus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/novela_aura_carlos_fuentes.pdf
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/38778641917.pdf
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/80817547262.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000586b.bin
b3e3d1a88fdc18c7e32a135b680bd9282a399e0189efa3331e70ab12390f2b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586B 5144 bytes
font_01_sfnt_off000069fb.bin
dd62fff73ba48bbc86d10de4673d2673b7fb8aac11eb60b3c2be575e4750982a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 10284 bytes
font_02_sfnt_off00008d23.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D23 4324 bytes

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