Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d737cec765d460…

MALICIOUS

PDF

64.5 KB Created: 2020-08-14 15:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c5af2204692d41f66e5e68dbaedde2f SHA-1: 44b1aa84bae765cfcc25fc9428c5e3a8943e0646 SHA-256: 17d737cec765d460226650b49c036625c516e58a486f8980a5aefec3f4bcb7c8
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, masquerading as a current affairs document, to a link farm and a malicious redirector. The primary malicious link is https://ttraff.cc/pify?keyword=august+month+current+affairs+pdf+2018, which likely leads to further malicious content or malware. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports a phishing or content-luring attack pattern.

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=august+month+current+affairs+pdf+2018
    • http://files.wynnstan.com/uploads/1/3/1/8/131856815/4605644.pdf
    • http://taramesil.divahairbydavidcarverford.com/uploads/1/3/0/8/130874330/9267798.pdf
    • http://tepub.vancouver604.ca/uploads/1/3/0/8/130813765/movubesiwiwojuvarisi.pdf
    • http://files.letspaintarabic.com/uploads/1/3/1/3/131379612/22ab9b14a11.pdf
    • http://files.counselingservicesknoxville.com/uploads/1/3/0/8/130813769/polozixod-sozenavisovux-tufajobudozo-voluju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/zulexinoxidaweko.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/agisoft_photoscan_tutorial_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0431/5211/3820/files/chief_keef_mixtape_2015.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/77399566209.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/12108530728.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/fidubavibevofoxizi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/ripupowipefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/kijilumadatu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/asking_alexandria_moving_on_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/87751202393.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/renepati.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/auditorium_space_requirements.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_off0000bd0d.bin
92d5f0f6c095694ed8deb88b118fb9368e6939185353c8c3a7fc94a5c4ddee46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD0D 6048 bytes
font_01_sfnt_off0000d16f.bin
dff4dc48bd54ee0ac0cdcf51e5be9c7d85e5412a73bf00129999de0439cac34e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD16F 10276 bytes

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