Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a774f58e89d74f4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 09:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 214327a5adb0da488e3a1440e003f7ac SHA-1: 38a0cb93703576afef769b440fb55c3670bb723e SHA-256: 6a774f58e89d74f4a0dd38458de80ad76fcf9871ae4f05d8f35f01a8a462c0c9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to host phishing content. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that leads to this redirector.

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/wix?keyword=rainbow+vacuum+scents+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/ap_reorganisation_act_2020_notes_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/xejukibazijowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/1340587867.pdf
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/66703359374.pdf
    • https://static.usrfiles.com/ugd/0f1814_698428586ebb4708a7ab8af1ecdf4c63.pdf
    • https://static.usrfiles.com/ugd/7f46b5_32b93572dd7d487cb84958b2ad22abc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e68f3ff76aa43c089336ca96bb625f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_6e43aeba9e79492dbf2cae5d68a824a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a234725131204072be73204f96052323.pdf
    • https://static.usrfiles.com/ugd/1a89c8_0474bfa165a841198b104da79e3294d6.pdf
    • https://static.usrfiles.com/ugd/23e9be_a67382b82fda4107ae1c8e34b852d1d3.pdf
    • https://static.usrfiles.com/ugd/f96b02_a2a3a2d2e22d4ef98a1c4459d44804d3.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3880/files/ibwave_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/75375580671.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/fepanak.pdf
    • https://cdn.shopify.com/s/files/1/0450/3309/5326/files/3424630083.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056fd.bin
6b93cdb02518806a82e7445bb859d7a8c3a4b0de8a2c653d2ba8450f6912f96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56FD 5312 bytes
font_01_sfnt_off0000690d.bin
6dc77882fb49dae8c288ce0337121005209ea267d50513954e95324f0ea5f885		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690D 10060 bytes
font_02_sfnt_off00008b3e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3E 4324 bytes

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