Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d50611214c3423…

MALICIOUS

PDF

55.1 KB Created: 2020-08-16 21:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbf43569a4d8d7eb03ad140fc97ad6ab SHA-1: eeddcc8169aa7a69c0692568f509194d966f8873 SHA-256: 60d50611214c3423ee8e5766e0ba4bf3bcb46a775357c00a416132687f7aa800
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a redirector service, which is a common tactic for phishing and malware distribution. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the ML classifier strongly indicates maliciousness. The document body text, though partially corrupted, suggests a lure related to an abandoned vehicle report, likely intended to trick the user into clicking the malicious link.

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.com/pify?keyword=report+abandoned+vehicle+texas
    • http://files.robsellsatl.com/uploads/1/3/0/7/130776272/vatet.pdf
    • http://files.listprogramme.com/uploads/1/3/1/3/131380126/4734388.pdf
    • http://files.sunshinecityfilmfestival.com/uploads/1/3/1/0/131069744/a0366dc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/13705490845.pdf
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/kufapuseb.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/72918751391.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/inspiring_story_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4934/files/dosebumijuvinuwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/botawanagijizu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3941/6732/files/kigirubixadiwubuxizelovu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/bcbs_prior_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/bawazup.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/4989043413.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/zakivuzume.pdf
    • https://cdn.shopify.com/s/files/1/0437/6802/1141/files/eastern_nc_saltwater_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/theory_of_harmony_arnold_schoenberg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/67425791563.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099c4.bin
256faa58eaa7f35e8afd6bb5da2a94f012b214ff30041393ddbf8a00e77baf9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99C4 5436 bytes
font_01_sfnt_off0000ac33.bin
3dc4827463ba460c032c6afcda396bd1459dc041a6b8386f1685ac17561b72ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC33 10468 bytes

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