Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b68932b05ce5e7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 19:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1cf57ad3af59cc48e2b1b8859088048 SHA-1: 8413be05f22a7db0b7b3d1a83d85b12424229366 SHA-256: 36b68932b05ce5e76f894128ce86991a926564019cda18e84df7d5fa5ca3971f
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and other links pointing to external resources, suggesting a link farm or redirection scheme. The presence of a 'call-to-action' phrase further supports the intent to trick users into navigating to potentially harmful sites.

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=past+simple+irregular+verbs+exercises+pdf
    • http://gisudawaw.mtoliverunningtofeedthehungry.org/uploads/1/3/1/3/131380213/70f938d.pdf
    • http://kukisise.greenkordofan.com/uploads/1/3/1/4/131407406/melorewuxakej.pdf
    • http://files.jurneyvetneuro.com/uploads/1/3/1/3/131383838/vifiwagiz_disesodubux.pdf
    • http://files.laughingmatterstudios.com/uploads/1/3/0/7/130775665/wegekekiwomegamafup.pdf
    • http://files.melodywagnerforstate.com/uploads/1/3/2/6/132695321/6140497.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/lidozovomiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/93914029903.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/91897772342.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/84652027820.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/24484152553.pdf
    • https://cdn.shopify.com/s/files/1/0436/1617/4237/files/harry_fucks_hermione.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gipal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/keto_grocery_shopping_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/6254/8887/files/urbanismo_romano.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/shipley_proposal_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/45624787983.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b7f.bin
9f6e9dc4da0ef364bb5c78e2a41f96fb45b29bd447cc1abeb88a0bf9bff23138
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5744 bytes
font_01_sfnt_off00005efd.bin
adb98b48818512c1b61f8b668c6f476c02d82a8f642df0a68b1cc0e9aa1d92e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 9628 bytes
font_02_sfnt_off00008017.bin
313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8017 16060 bytes