Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2cd1f7f3ffdf9f9…

MALICIOUS

PDF

37.0 KB Created: 2020-08-19 06:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7d1e006d5fd90b2d948d7b40263139e SHA-1: 72e5aec0d2368e90b2a1fb8dcf593affe2178fd5 SHA-256: c2cd1f7f3ffdf9f91f89f01edc8713d606bd13394e866f4fe035a0ffa1a6aa37
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body and the extracted URLs. The document body text, though partially garbled, indicates a lure related to a "Commonwealth seniors health care card fact sheet". The primary malicious URL, https://ttraff.cc/pify?keyword=commonwealth+seniors+health+care+card+fact+sheet, is a redirector designed to lead users to further malicious content. The presence of numerous other PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=commonwealth+seniors+health+care+card+fact+sheet
    • http://buxoxi.stonegatestriders.com/uploads/1/3/1/3/131380600/1203733.pdf
    • http://files.stalwartarms.com/uploads/1/3/1/6/131607163/pepiroxolorobe.pdf
    • http://files.stjohnsuccbrighton.com/uploads/1/3/0/7/130739704/patorezupomisodawis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/nidewewepumulin.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/patriot_chipper_shredder_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/firefox_move_tabs_to_bottom.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/breviario_romano_1962.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/konibatum.pdf
    • https://cdn.shopify.com/s/files/1/0431/0787/7017/files/battery_charger_schematic_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9633/files/xumodi.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/cessna_172_pilot_operating_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/atal_pension_yojana_application_form.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_off000045b3.bin
ef44cc6cf49561fb2aa3f3a176148052db1713e8ac9b5ccd2e016eaa1c28d2a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45B3 5164 bytes
font_01_sfnt_off00005719.bin
46c812bcb3bd53a7a445247cbe5ceced556b9a01ae463c24c719781309b58551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5719 9852 bytes
font_02_sfnt_off000078d8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D8 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.