Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d391962d92f2f6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 23:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 598026b1f09c9af4b80f8a1d967ea5a7 SHA-1: 68b2e03f0158150623b095a9af2be0edf3899eaf SHA-256: 88d391962d92f2f673c8a56ac8df44e0bdb404928752447f4fa5f68e7f7d5c08
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by an ML classifier and contains multiple heuristics indicating malicious intent, including links to known redirector infrastructure. The document body, though partially corrupted, contains URLs that appear to be part of a link farm, likely intended to direct users to malicious sites or download further payloads. The presence of numerous embedded URLs, many pointing to Shopify domains, suggests an attempt to disguise malicious links within seemingly legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=fiche+technique+pisciculture+hors+sol+pdf In PDF document text
    • http://files.biblesforpakistan.com/uploads/1/3/1/3/131379296/5665074.pdfIn PDF document text
    • http://files.bloominozzieclicks.com/uploads/1/3/1/4/131437380/jatigirozifil.pdfIn PDF document text
    • http://files.wellaromanaturals.com/uploads/1/3/0/8/130874422/nesutatokaxedakip.pdfIn PDF document text
    • http://files.larahues.com/uploads/1/3/1/4/131454034/gujap_vajogipolafijuk_pisopinet.pdfIn PDF document text
    • http://files.empireplumber.com/uploads/1/3/1/4/131483143/8100950.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/1/0428/2236/9446/files/uplay_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/2430665299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/26404161192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/mafatexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/gekonokekopefitaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/27772808579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/38844981954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8602/0761/files/kafemaxafekoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/34122940094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5432/6179/files/jafosipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/11264971514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8737/9097/files/ladejetukodis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/tokolemuruvixavufeg.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_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 5112 bytes
SHA-256: a26d1b3bca0c9396731ea61f73b2f81a105761a858cd70ec2ca3428d6e7489ed
font_01_sfnt_off000072ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EC 10068 bytes
SHA-256: 6f7709abea84117b5955280257e4c1d542bf33e73296436effcb3195a62baf08