Malicious PDF — malware analysis report

Static analysis result for SHA-256 f62f536df15d3162…

MALICIOUS

PDF

37.6 KB Created: 2020-08-18 13:27:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 956d0c34386e21702ae5fae3162e11e7 SHA-1: ae698ec56cf50ee59692a2ee978415cae79f1a12 SHA-256: f62f536df15d31621f1ebaa20b235237ff50e28aab38db31e365f537f8721348
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=gmail+app+android+multiple+accounts'. This indicates a phishing or social engineering attempt to direct users to malicious infrastructure. The document body also contains this URL, reinforcing the lure. The presence of a link farm heuristic further suggests an attempt to manipulate search engine results or distribute links broadly.

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=gmail+app+android+multiple+accounts
    • http://nikibul.expressionsofvoice.com/uploads/1/3/0/8/130874284/lunum-menofo.pdf
    • http://files.modestlymade.com/uploads/1/3/2/6/132681281/6015231.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/mozilla_firefox_browser_extension_video_helper.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/histology_of_bone_and_cartilage.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/escala_cromtica_clarinete_sib.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6362/files/62549753746.pdf
    • https://cdn.shopify.com/s/files/1/0431/5591/4918/files/bread_recipe_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/benefits_of_exercise_on_mental_health.pdf
    • https://cdn.shopify.com/s/files/1/0433/5370/2550/files/2318775100.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/vazoxaritezotukizada.pdf
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/garmin_dezl_770_manual.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_off00005784.bin
ae4d130b0c8502c6d1cc611068acb40161485cecc7e5e82c7143ea8d2c3a9b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5784 5252 bytes
font_01_sfnt_off0000693d.bin
1b9557f027a604bb96f1edad6e940271009b789f26df5917e6bbb015517ad9a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693D 9620 bytes

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