Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad485f9d8922a2c…

MALICIOUS

PDF

51.0 KB Created: 2020-08-06 03:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a35e2d89801ed58c51c860faa0229685 SHA-1: ff5e1ca0794470988718dbd0bec747a3e2608040 SHA-256: 1ad485f9d8922a2cb386328030940ff447cdad820b8d3969831eb297b46c1416
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a common tactic for SEO poisoning and link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=plant+systematics+and+evolution+pdf', indicating a probable phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=plant+systematics+and+evolution+pdf
    • http://files.dbardogs.com/uploads/1/3/1/3/131380390/tubolex_wukog.pdf
    • http://files.southcolbyptso.com/uploads/1/3/0/7/130739651/fuwoxes.pdf
    • http://files.stannelibrary.com/uploads/1/3/1/8/131871602/tokatepagexet-kavopagimu-ladamire.pdf
    • http://popomelez.theschooloffinetuning.com/uploads/1/3/0/9/130969744/8786055.pdf
    • http://popomelez.theschooloffinetuning.com/uploads/1/3/0/9/1309
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/pulawudoni.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6706/files/a_problem_book_in_mathematical_analysis_gn_berman.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/qualities_of_good_research_problem.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2046/files/manual_de_autocad_civil_3d_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/65416773049.pdf
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/discord_staff_rules.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/how_to_make_commands_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/xozobulogutizugalosogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/retijub.pdf
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/about_schmidt_script.pdf
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/79172112990.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_off00008ab1.bin
87ce1836521663b38cdca104fcc5d98aea1e973fce12307d76fd29eef0a2aefd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB1 5368 bytes
font_01_sfnt_off00009cfd.bin
23835c6a0e7d7cb9090c90cee89dd1a18cc17909726500981059a417ae60c6af
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFD 9860 bytes