Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b2081452326d11…

MALICIOUS

PDF

41.7 KB Created: 2020-08-04 09:34:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed9e325ffd53b8748b6ff230e5847dae SHA-1: b97b1f56d0c78ea031050b40e213f31d17c99238 SHA-256: 80b2081452326d113f588b4a5bac799f9cae1995953ed3c28d9904e9c1540392
162 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a high likelihood of this document being used for malicious purposes, such as phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous external links suggests a watering hole or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=abraxane+pi+pdf
    • http://files.philanthropyadvisorsny.org/uploads/1/3/0/7/130776674/kejidujurajagimitu.pdf
    • http://files.bumixx.com/uploads/1/3/1/4/131438002/6899589.pdf
    • http://files.briannabelmonte.com/uploads/1/3/2/6/132682731/vopagazajis_tewebupujoj_removefoxo_radunuzaberada.pdf
    • http://files.devotedtotheking.org/uploads/1/3/0/7/130776277/4916315.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/50832056282.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/jupelujujupiduzovolaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/roluwujuka.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/gofobisutigexerupiwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/26865344674.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/zevetuzadi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/44590261802.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/2002_mercedes_benz_c240_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/tekupage.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_off0000663b.bin
b26c907320dfc3387392c275039bdbfe082353942de224ff7ab98150c7985014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663B 5020 bytes
font_01_sfnt_off0000775e.bin
62bd7ed0e07f138bb6be3a9f475b43642dad97cdde9101d1108570326492d5dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 10256 bytes

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