Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc6cea12303da7f…

MALICIOUS

PDF

63.2 KB Created: 2020-08-05 00:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2953ce909f3068c651995c33b0671c63 SHA-1: b3b2c0165d733da971a72b4ae68f5191436f78ae SHA-256: 1bc6cea12303da7f33df5f3598b13dffa34c44c7b20c548257147ed70db542ce
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains numerous embedded URLs, including a primary redirector to 'ttraff.com' which is known for malicious activity. The presence of a large number of external links suggests a strategy to distribute traffic or host malicious content across various domains, likely for 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.com/pify?keyword=shear+force+and+bending+moment+calculations+pdf
    • http://nekosera.whalingfire.com/uploads/1/3/2/3/132302782/ketanawekiwow_zuzokupogux_sidadopupeja.pdf
    • http://tevovub.johnscothist.com/uploads/1/3/2/7/132740892/jisukidurujive_midugojizo_muvanojugili.pdf
    • http://files.davegrenfell.co.uk/uploads/1/3/0/8/130874110/bapidexedofan_repadamoligax_jofegu.pdf
    • http://files.projecteva.org/uploads/1/3/0/7/130776401/9066253.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/kurujek.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/69576345074.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/jifupatatofovebomunoxasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/61255627727.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/savable_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/bajasugerur.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/47264371985.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/31740469728.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/95451263412.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/19404551656.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/gafatukefasigemaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009671.bin
11ee8e352b958cdf8f0d89aaa328d9bfe8123de4eabe84e0b8925b46071f8b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9671 5812 bytes
font_01_sfnt_off0000aa0d.bin
eca0f291177a389c47dcaeb56bd444e046ab6dfda79ff193b2aaa70f48856674		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA0D 15216 bytes
font_02_sfnt_off0000da2e.bin
786e4db6c2b8a63317ebd2e62e9313324635a3bcc9286cbba0aa59ea406ff707		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2E 16096 bytes

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