Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e41ec8a49b82f9…

MALICIOUS

PDF

40.3 KB Created: 2020-09-03 03:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d48b9c0cacf66df9bf01bd04b87f9d9 SHA-1: 1bc73ecf3812cc6722fbccae468e2894068961f4 SHA-256: 94e41ec8a49b82f943702a8350caa543f8f28ae264797031ec0c8a3e87fe1c29
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=coliform+in+well+water+ontario', suggesting a lure related to water quality information. The presence of numerous other PDF links hosted on Shopify indicates a coordinated effort to distribute malicious content.

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.link/wix?keyword=coliform+in+well+water+ontario
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/next_3d_launcher.pdf
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/pudolifo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6148/5471/files/irb_claimant_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/wogefopivaxajirimune.pdf
    • https://static.usrfiles.com/ugd/fe0276_f7aefa8ae2cf4b7dacbd9850b50594bd.pdf
    • https://static.usrfiles.com/ugd/a44510_d7026b2864bd4d3b83f4a3c89a426af9.pdf
    • https://static.usrfiles.com/ugd/9a242c_8bc742da28c64f58b5bfb878960061b0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95936092566.pdf
    • https://cdn.shopify.com/s/files/1/0437/1916/4058/files/jobs_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/71696810348.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/miwatigefefodulete.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_off000061a3.bin
faa8078998e32b0759a7f82fec727ac68c30932d11074df292a400328d674957		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 4732 bytes
font_01_sfnt_off000071ad.bin
a7c331877e4cda04bb22bfbcfd2b3dfc202c02adc35c02046d2484bea2996231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 10288 bytes

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