Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdfdef0b23643db9…

MALICIOUS

PDF

54.2 KB Created: 2020-08-03 11:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b58b40bc378202c2ebc97ff02745380 SHA-1: cd82f9cf16c0bb58d8bdfe8818b9bd065f133e39 SHA-256: cdfdef0b23643db9d77f6596f991853175458d6edef3d34432bfb0945a083f48
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and numerous links, with a critical heuristic identifying it as a malicious redirector link pointing to 'ttraff.ru'. Another critical heuristic flags it as a PDF SEO link farm, with many links pointing to Shopify domains, but the primary malicious link is to 'ttraff.ru'. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a site that likely hosts further malicious content or phishing pages.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=minecraft+giant+oak+tree
    • http://files.cpang-architects.com/uploads/1/3/1/3/131398144/5023264.pdf
    • http://bovimo.lotsofbundlez.com/uploads/1/3/1/4/131483138/sodewapubavazox.pdf
    • http://files.sophiedesousa.com/uploads/1/3/0/9/130969526/9324095.pdf
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/zamakisumiduzeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/worlds_hardest_game_cool_math.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/metroid_prime_2_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/43129839603.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/sowevu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/8440811038.pdf
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/how_to_clear_cache_on_macbook_pro.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/linulijokimami.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/mw3_hack_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/mtg_arena_ios.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/lezunotekulebuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/sunovavulidukoxopirowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/84192278757.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/zamuvibojoximen.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_off0000925c.bin
d791ba6d973a8368bdd7f1c1365ac99b70e8382d5f5d401bd8993c67d4f62ac9
pdf-font-stream PDF embedded font (sfnt) at offset 0x925C 4908 bytes
font_01_sfnt_off0000a339.bin
a30729a7f7102d34caf8485f59ff5bcfb0054e8a541ec0514f5c6e98de651baa
pdf-font-stream PDF embedded font (sfnt) at offset 0xA339 12068 bytes