Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5abf499b5e1de59…

MALICIOUS

PDF

60.2 KB Created: 2020-08-05 10:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d75af5facebe3581523f9d22607afd21 SHA-1: a23307629e7ab48c29267bbd9be49a2e27401167 SHA-256: b5abf499b5e1de5965decd787f4a8d3ef586d07cf8224785d91297e56f6b179a
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify domains, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same malicious URL, indicating the primary intent is to redirect the user to a harmful site. No scripts were extracted from this sample.

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/pify?keyword=strategic+marketing+planning+process+steps+pdf
    • http://nalesu.greenwichandjane.com/uploads/1/3/1/3/131379730/6828385.pdf
    • http://files.northeastwisconsinwelding.com/uploads/1/3/2/7/132710690/kuteweposozax-gesetu-gizafojerup-lizexamakatazu.pdf
    • http://files.huningtonchase.org/uploads/1/3/0/7/130739287/buxefaponibakaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/gezovuwuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/nofifekelirimoli.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/vowozipivonororobiregej.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/66817896040.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/87254847431.pdf
    • https://cdn.shopify.com/s/files/1/0433/4167/6694/files/48140899834.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/22103477193.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/94530021231.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15900382268.pdf
    • https://cdn.shopify.com/s/files/1/0437/8843/5613/files/zovuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4483/8303/files/27426791916.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/rivaba.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_off0000ad07.bin
2da172176094ce5f6ae99b9064e01f7433baf1fe83039fb83e52f9b93db84272		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD07 5640 bytes
font_01_sfnt_off0000c02b.bin
ab2279bd37fa84be64bb5e445c0214a75abaad7aa2c0ddd4d6038667b8e4fb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC02B 10488 bytes

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