Malicious PDF — malware analysis report

Static analysis result for SHA-256 930acc15da03bc88…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 17:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42d8c902de77f1eea86faf826df14eac SHA-1: 5ea5dfe50b0acb45ac47863dcc76d35d87a2acdc SHA-256: 930acc15da03bc8877d35513c6cf80f811595ba59824a841ef56d22326b4f69a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=skype+7.+39+offline', which is also flagged as malicious. This URL likely serves as a lure to download a malicious payload or redirect to further malicious content. The presence of a link farm further suggests an attempt to distribute malicious content or manipulate search engine results.

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=skype+7.+39+offline
    • http://files.merarifernandez.com/uploads/1/3/1/4/131407165/6839308.pdf
    • http://files.theresemcinerney.com/uploads/1/3/1/1/131163613/joruluz.pdf
    • http://tubaramat.notabenetucson.com/uploads/1/3/2/8/132814930/4320682.pdf
    • http://files.chesapeakeawnings.com/uploads/1/3/1/8/131857818/doragufemewu-kawopanegotu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4823/8241/files/pugazatok.pdf
    • https://cdn.shopify.com/s/files/1/0435/5060/5461/files/calculus_and_vectors_grade_12_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/2988/8161/files/46402277795.pdf
    • https://cdn.shopify.com/s/files/1/0432/0172/4577/files/18370505462.pdf
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/xizujokopakalibudim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/puxajulefinevudu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/3881316673.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/39059326107.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/admission_form_design.pdf
    • https://cdn.shopify.com/s/files/1/0437/8663/3377/files/agro_ecological_zones_in_tanzania.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/ai_file_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/kuronimimufibopevefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/os_axiomas_de_zurique_completo_gratis.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_off000061b3.bin
c6cfce9f87bafd224f5ff31ada3c3ce88318423b6ce360724c71ff1147619d91
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B3 5112 bytes
font_01_sfnt_off0000734f.bin
966fc86eb730b4862dfb767ee68e40de528c5823dc50561ad1230342e09519ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x734F 10280 bytes