Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3c5e8c98a377ed…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 07:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6848b03fe8bbe96f600d2e8f831b96b7 SHA-1: bce8964814a744c9e1ce74dc17db5ec47f2a89c0 SHA-256: fe3c5e8c98a377ed48eeef39ecd3743a7957d122ab0c367418b612511ee8ebd0
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure.

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=26+gallon+air+compressor In PDF document text
    • http://files.chorus-tube.com/uploads/1/3/2/6/132682040/be2cc550.pdfIn PDF document text
    • http://files.edibleexpression.com/uploads/1/3/1/6/131606027/jajilizigoj.pdfIn PDF document text
    • http://files.chateaumae.com/uploads/1/3/2/8/132815008/jijirimexeresisud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/21462994510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/65925673661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/tamia_still_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/bomum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/merufulusutegoravolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/tolufuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5213/7625/files/lincoln_ac_225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/sovaxigafipasemerozime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6336/9125/files/xutijosulozedatinafanud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/wipavok.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6116 5444 bytes
SHA-256: 57bdbbb96aefefb24cb69bc0ee137cebb0445f83e40200716903af291a0eba54
font_01_sfnt_off00007385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7385 10048 bytes
SHA-256: 73ce8928824587f661d6b2a29067cffdcd574f5e2fac3faeb4a5d71d3116e873

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