Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d59addaad64f58…

MALICIOUS

PDF

37.7 KB Created: 2020-09-05 00:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8993b6344f81c965d7a61e69c4c90b85 SHA-1: 3a1ee544bad5ece8087f1a03b99d4303d4563032 SHA-256: 09d59addaad64f58a1bb5a2d5a1b9e0d5ea75345c126eab43713aa84071092be
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.club/wix?keyword=aromata+baking+paper+sheets'. This URL is likely used to redirect users to a malicious site. The PDF also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly indicate an attempt to lead the user to a harmful destination.

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.club/wix?keyword=aromata+baking+paper+sheets
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/11996065298.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/zizaliwevomafazagexasis.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/vixoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0247/files/zulofegomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/negative_prefixes_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/23868267521.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/kimevizi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/10848024067.pdf
    • https://cdn.shopify.com/s/files/1/0432/5218/7298/files/8th_grade_science_curriculum.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/starbucks_going_global_fast_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/vufiropuranazagivadilaka.pdf
    • https://cdn.shopify.com/s/files/1/0429/0327/3628/files/wusaf.pdf
    • https://static.usrfiles.com/ugd/5926b4_acadfe5f4d8741d49dd98af730d50983.pdf
    • https://static.usrfiles.com/ugd/95bb70_9f2f10fab2d74bdbb6807bc962c4aca7.pdf
    • https://static.usrfiles.com/ugd/b8c837_114e5d7d0dcc4541a4bc9ba8b55104f5.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_off0000541a.bin
aed66ce9396c6312ec475a482fb46b973338d25c224ecb9da225652d243b7b43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x541A 5392 bytes
font_01_sfnt_off00006644.bin
1f9cc2159015d138f0aa6f6cfb65a1a733a6ee99106493eba1a3855c8db950bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6644 10512 bytes

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