Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7adce3988442f62…

MALICIOUS

PDF

44.0 KB Created: 2020-08-13 09:27:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a59fb72666c5cff011199e33f9393253 SHA-1: 655a04afe451ab52d61a1470f0087c36293fbbd2 SHA-256: d7adce3988442f625fc93b605fcf2cf1dbad93ccb694d1bb4c020e8033d6267c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic indicates a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of this link farm strategy, aiming to lure users to malicious sites under the guise of search results.

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.ru/wb?keyword=hospital%20bag%20checklist%20uk%20pdf In PDF document text
    • http://bizorixuf.rushtotug.com/uploads/1/3/1/4/131453213/1e618cfd30500.pdfIn PDF document text
    • http://vepobad.adelanteawards.com/uploads/1/3/2/7/132740214/8100612.pdfIn PDF document text
    • http://files.ramsportsnetwork.com/uploads/1/3/1/3/131381021/zumorotanosunufob.pdfIn PDF document text
    • http://files.healthybalancedbodies.com/uploads/1/3/1/3/131380741/modunajakesufu.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/1/0449/7879/8750/files/catering_services_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/john_deere_7510_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/migekepasut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/36824896264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9966/7112/files/gowoviloladuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/felavekezujatonure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/gotikosajewemolutoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/weather_underground_grand_rapids_mi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/jetabepakuponubijomogoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/google_wifi_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/lofejit.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
🗂 Part of campaign: leguesepticservices.com 10 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 5484 bytes
SHA-256: ba8224bd900b8bdb3c4b435b1689d980962b0184d31dd322780c4dc177b873f2
font_01_sfnt_off0000812b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812B 9952 bytes
SHA-256: 4cd6a2c05edc2a70e2a5b24c3b6910c51a9ddfbd5800c19aa0d2e7a3aceb3fd9

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