Malicious PDF — malware analysis report

Static analysis result for SHA-256 f280bc8717eba433…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 03:51:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d32c31edb24c44ceba90b3cfc2217654 SHA-1: 5f7bc673e377e225918f273c0766cd39ae6489be SHA-256: f280bc8717eba433b1688924c7af84e11427180268296e53410622101a106cc6
128 Risk Score

Malware Insights

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

The PDF contains a lure for a 'Cartoon hd app for laptop' and embeds a mass of external links, many of which point to shopify domains hosting other PDFs. One critical heuristic indicates a link to a known malicious redirector, ttraff.com, which is likely the primary payload delivery mechanism. The document body is heavily obfuscated and contains embedded URLs, reinforcing the malicious redirection attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cartoon+hd+app++for+laptop
    • http://notuputot.naturalfoodsofkearney.com/uploads/1/3/1/8/131856543/8014392.pdf
    • http://files.neoshoalumni.org/uploads/1/3/1/4/131453045/37c551.pdf
    • http://files.kengoesclick.com/uploads/1/3/1/8/131858592/9358853.pdf
    • http://files.cynthiakgoeller.com/uploads/1/3/2/7/132712508/861155398e5.pdf
    • http://files.thealbertaroseschool.com/uploads/1/3/1/4/131437584/78dd8d05ec13e82.pdf
    • https://cdn.shopify.com/s/files/1/0434/3863/7208/files/sort_values_pandas.pdf
    • https://cdn.shopify.com/s/files/1/0429/3119/1975/files/mezabejexatojotaliberoti.pdf
    • https://cdn.shopify.com/s/files/1/0428/6224/8095/files/minecraft_nuke_mod.pdf
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/convert_to_word_doc_adobe_reader.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/powunenerakafonen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/79587262457.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/velerenuxorilojoderivufa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/zapefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/guide_taille_ceinture_diesel_homme.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zadolodiwifunum.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_off00006d39.bin
0e55a724384647f054a3286f8dbdb357c226513552a0a3d872d83bc7bc668905
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 4856 bytes
font_01_sfnt_off00007db1.bin
393c2b25299a0bf78b213575f9b09e408cc00942118e6ba49ebce21b24624e49
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB1 10020 bytes