Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a170515f8d94ef3…

MALICIOUS

PDF

42.8 KB Created: 2020-09-01 03:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 909654147df36c6d3612ae58088ef4d2 SHA-1: bb0b7c0cf31c17c4e849a8d7c4c375400f05882c SHA-256: 9a170515f8d94ef3d5f54c0a00c736ad331b84cce936b9936747e6f5520fb70c
148 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a link farm, indicating an attempt to direct users to potentially harmful content. The presence of a visual download button and a callback lure suggests a phishing or scam-related attack pattern. The document body, though heavily obfuscated, contains URLs that are consistent with these findings.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.cc/pify?keyword=borland+delphi+7++gratis
    • https://static.usrfiles.com/ugd/74a852_7a3115b4140545bd978c84f6d9f9263e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_0d00a2666b434f97b6178b02934d329c.pdf
    • https://static.usrfiles.com/ugd/9ea91e_287209ecec4c470f98e8759bb299385d.pdf
    • https://static.usrfiles.com/ugd/07ef24_384746585721446891d01577bc1b5ac3.pdf
    • https://cdn.shopify.com/s/files/1/0440/7898/9462/files/52123415598.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/arduino_ethernet_shield_w5100_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/nosugujubafagogitofudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/425669208.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/woodland_park_zoo_concerts.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/rigulozetidebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7935/8869/files/web_based_application_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/tetupagegidopijiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/49265848817.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/duty_of_care_in_tort_law.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_off000068fe.bin
d509dbf26aebff2b200a7fb3baa5bb48a3a6065a6ea27a4ef579f600e7b2e258
pdf-font-stream PDF embedded font (sfnt) at offset 0x68FE 5348 bytes
font_01_sfnt_off00007b2d.bin
aebf82f10337337ce35d2373cb6da44d8a684025d2b2f2e3760e8e7b0fc8a8a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2D 10568 bytes