Malicious PDF — malware analysis report

Static analysis result for SHA-256 6490fb5cf5199e30…

MALICIOUS

PDF

35.0 KB Created: 2020-08-22 15:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3c2854b7924b8f005b7e5079e47a061 SHA-1: d0e11ad70d22f7048f44fd083cb5f6b0bfcd2c0b SHA-256: 6490fb5cf5199e3035175e332a7b01e6a6838bedc7214fafc0dab6d7923ff773
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Avery templates labels 5162', suggesting a lure to disguise the malicious intent. The presence of multiple external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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=avery+templates+labels+5162
    • http://rudari.fronhoferlab.net/uploads/1/3/1/4/131482952/tukovefoxek.pdf
    • http://vedejagov.thecornersheffield.com/uploads/1/3/0/9/130969776/4b86effcdfaf808.pdf
    • http://files.evolvemovementcollective.com/uploads/1/3/0/9/130969150/6680922.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/xowubodobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/gexozovoxapezuvoboxin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/honeywell_thermostat_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/america_history_of_our_nation_answers.pdf
    • https://cdn.shopify.com/s/files/1/0443/4313/2316/files/kabbalah_unveiled.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/koguzekafixof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/notadenagefajofakiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajotoliwafugesekediriw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/ruzonedusunonagesumalapi.pdf
    • https://cdn.shopify.com/s/files/1/0452/5208/3869/files/bson_format_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/zebupozi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/glencoe_pre_algebra_textbook.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ab2.bin
3fd1d61316822300ac54e6da5af56544c76a9751a6e4f761471340535dfe1d44
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB2 5716 bytes
font_01_sfnt_off00005e28.bin
fe96122b99289b7ef002802cbbbdcca6a32ddcb1ccd420b57e53b0c52d12b058
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E28 9692 bytes