Malicious PDF — malware analysis report

Static analysis result for SHA-256 684c7cec66ac549f…

MALICIOUS

PDF

47.6 KB Created: 2020-08-10 08:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40f7226408bb0ea5260435d7df20e8fb SHA-1: 6484e1c707ab4ca6b6f41ddb76eb3b149143f10d SHA-256: 684c7cec66ac549fb0ef6178a18aebeabe67d3d99c718347926ed80d03b2d59f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded artifacts reveal a large number of links, many pointing to Shopify domains, but the primary malicious URL is https://ttraff.ru/pify?keyword=asbabun+nuzul+pdf+bahasa+indonesia. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites.

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.ru/pify?keyword=asbabun+nuzul+pdf+bahasa+indonesia
    • http://files.nmschoir.com/uploads/1/3/0/7/130775974/5487441.pdf
    • http://files.lindsaywaxleracupuncture.com/uploads/1/3/1/6/131637257/wogijimena.pdf
    • http://fimik.eyelikegallery.com/uploads/1/3/1/3/131383444/fekom.pdf
    • http://files.arkansasbasin.com/uploads/1/3/1/4/131438114/tusexuvebogunu_wigigesifapuxo_vumogojibi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/anti_lock_braking_system_seminar.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/tuvulazite.pdf
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/jokevitetimuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0223/1971/files/microsoft_leap_program.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/jexedokuxiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/47822133174.pdf
    • https://cdn.shopify.com/s/files/1/0433/6615/4394/files/fisawufutipumopajidukuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/87538728247.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12457093378.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5523/files/zosedixariserib.pdf
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/dekirakuperipajatiwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/omc_control_box_manual.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000570a.bin
897c65278dc4188acc83193ff2aa1aa456c8de55c1723c2e88a35ea58ea24f1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x570A 5012 bytes
font_01_sfnt_off00006809.bin
a02a021a53847d72cff3efec599706b386e3e1e164519940a5355220ea49e1ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6809 10012 bytes
font_02_sfnt_off00008a93.bin
4f9afc2aeb0bf97ddc1a17247235f7fa586155de16f47428dd95e82820b30e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 16956 bytes
font_03_sfnt_off0000a2c4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C4 4324 bytes

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