Malicious PDF — malware analysis report

Static analysis result for SHA-256 649d1a17b1844f34…

MALICIOUS

PDF

52.9 KB Created: 2020-08-04 07:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 343c11e30ae144d934bea9160f76ee8b SHA-1: 62410eb76f37d0931dc6729951f49dbd24228184 SHA-256: 649d1a17b1844f34c5cd0ac433def3fc872742bb67c2dc88a555a30f086e1152
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a malicious redirector at 'ttraff.cc'. The document body, though obfuscated, contains text related to a syllabus, suggesting a lure to disguise malicious links. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms a high likelihood of phishing or malware distribution.

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=sybsc+cs+syllabus+mumbai+university+2020+18+pdf
    • http://files.jlraskin.net/uploads/1/3/1/4/131437977/pavuned_wovofupepefom_tedazitesadumet.pdf
    • http://files.mindthegapllc.com/uploads/1/3/1/1/131163854/koxegumu_gurasadafepi_palefudeti.pdf
    • http://files.kaingagame.com/uploads/1/3/1/6/131606758/bukodenufoxalalenu.pdf
    • http://files.tcjewelrydesigns.com/uploads/1/3/0/8/130813732/jagudisixusazenev.pdf
    • http://files.guidedlondontours.com/uploads/1/3/0/9/130969061/9107560.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/33699314239.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/49614489543.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/paris_hilton_age.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/solarapolijibexi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/mipatiwepopokewebexon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/99932784433.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5766/files/96596376182.pdf
    • https://cdn.shopify.com/s/files/1/0435/7180/6366/files/90667206025.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/21193871025.pdf
    • https://cdn.shopify.com/s/files/1/0432/5926/5188/files/65306174177.pdf
    • https://cdn.shopify.com/s/files/1/0434/8962/4224/files/44846321779.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/74295905247.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ef5.bin
ed7b434ffd2b8a61684c0f882f6a2e4d7e1213af536fb5670cbbf842ff21677f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF5 6228 bytes
font_01_sfnt_off0000841b.bin
b48bc68310536a57d773b9bef954cfb81b6af2340e26d84a62db96d1ef02e497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x841B 15408 bytes
font_02_sfnt_off0000b3d0.bin
0ad610276ebad88ea1561c1c8a2b224cdd06c576f528b1d925ba812e11e3861f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D0 4960 bytes

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