Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48299587eda8295…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 19:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733a6b8bb9589aa6f3ca9069fc5a21dc SHA-1: 9b1d3c615826f825fb407958ab0455494b592748 SHA-256: c48299587eda82955d6fe899ef55c6a01ad419d226bc937b72428aa1a8b36d22
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, characteristic of a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=biology+book+for+class+9+sindh+text+board+pdf', is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of the malicious redirector and the link farm structure strongly suggests an attempt 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.ru/pify?keyword=biology+book+for+class+9+sindh+text+board+pdf
    • http://files.talentlessandoptimistic.co.uk/uploads/1/3/0/7/130775033/1471324.pdf
    • http://files.labrottiecreations.com/uploads/1/3/1/4/131454505/3759211.pdf
    • http://files.cdl-canberra-ec.com/uploads/1/3/1/4/131406843/pukurajagefapu_xamuwos_togomisojor.pdf
    • http://files.nomadicbackpacker.com/uploads/1/3/1/3/131381976/jozonejajojim.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6069/files/can_you_create_sub_collections_in_shopify.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5832/files/busuxegefopikamaposufasa.pdf
    • https://cdn.shopify.com/s/files/1/0452/9078/2881/files/career_paths_tourism_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/3301/9047/files/93064069903.pdf
    • https://cdn.shopify.com/s/files/1/0440/9848/6424/files/ganewenudotalonifitabe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0917/7762/files/linotiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/how_to_make_snake_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/69642149547.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/96946935719.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/79538753900.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6573/files/hair_in_funny_places_babette_cole.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_off00006317.bin
82f3395c0d24117a8f43418674eb4d969a093ece98da35a58256dffbec27e7b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6317 5996 bytes
font_01_sfnt_off00007775.bin
4895cd03e7fa25ce2cc2ba92b914f11a76dfa8a124af3532d9148014d5e3dae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 9792 bytes

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