Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76ffc987d1ebea…

MALICIOUS

PDF

33.8 KB Created: 2020-08-24 22:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58fac75e80029e56fc98aed2af81c58e SHA-1: c1085653e9c32020bb80f525ff87b65ac7c08e90 SHA-256: 3a76ffc987d1ebeae777eb3147b4f5efbc03fb53045d554b1fd32bedb104a807
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. One prominent link, 'https://ttraff.cc/pify?keyword=aagadu+movie+dialogues+free', is identified as malicious. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users interested in movie dialogues, aiming to redirect them to malicious content. The presence of numerous PDF links suggests a link farm or SEO poisoning tactic.

Heuristics 3

  • 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.
  • 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=aagadu+movie+dialogues+free
    • http://files.elainedoesnutrition.com/uploads/1/3/1/3/131380625/foxajul_zezasagisuba_molijazesokiv.pdf
    • http://files.mcpa4you.org/uploads/1/3/0/7/130775352/jewekunefokevi.pdf
    • http://files.smokefreeottawa.com/uploads/1/3/0/8/130874541/woxatibabasejol-nazonazub-kifina.pdf
    • http://files.hardycoaching.com/uploads/1/3/1/4/131438563/fixakodaxik.pdf
    • https://cdn.shopify.com/s/files/1/0433/8532/3683/files/pozadamataxumedexubumew.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/ptsd_treatment_guidelines_australia.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/66004414273.pdf
    • https://cdn.shopify.com/s/files/1/0428/8852/8039/files/bubokomoxamekejitazusaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/principles_of_computer_security_fourth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/flywheel_energy_storage_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9393/files/jamikolafukaxukemelisasok.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/dologabanugodewip.pdf
    • https://cdn.shopify.com/s/files/1/0437/3060/0090/files/plague_inc_fungus_mega_brutal_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/75170728908.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/jinati.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/sufapawepiwoxaretob.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8036/files/novasalod.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_off0000478b.bin
c9069f0ef833a043cb59ef8f8d71aea4b1febaee5dae30272e93ad8b148d46c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x478B 5276 bytes
font_01_sfnt_off00005966.bin
197bb8ae3c60019047a3d05c694da5318443c6048114a7ff47074ae0598ae8e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5966 9724 bytes