Malicious PDF — malware analysis report

Static analysis result for SHA-256 84140e43130f02c8…

MALICIOUS

PDF

115.4 KB Created: 2020-08-21 10:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5da97739d3654a22599d3eac1ec583b8 SHA-1: dcde6bfe7b5ef39f7471d85229146d779ee4ea52 SHA-256: 84140e43130f02c8a16b349cdc8f964e6512d06374405b19042c0a41e793ee7f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The ML classifier strongly suggests maliciousness. The embedded URL 'https://ttraff.ru/pify?keyword=allosaurus+dinosaur+information' is a key indicator of the redirection and potential phishing lure.

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/pify?keyword=allosaurus+dinosaur+information In PDF document text
    • http://legovo.thessadventure.com/uploads/1/3/1/8/131871825/1413552.pdfIn PDF document text
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdfIn PDF document text
    • http://files.inspirationoftime.com/uploads/1/3/1/4/131454808/lusodexule.pdfIn PDF document text
    • http://files.catherineccartwright.com/uploads/1/3/0/7/130776826/fodenu.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/1/0430/5358/0439/files/install_git_mac_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1524/7771/files/super_mario_63_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vufofabiziterefabul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/vuruxakovorikiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5197/files/jinid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/vehicle_bill_of_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/23_amendment_in_constitution_of_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/99724532861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/zukodorudeveburam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/xedunemojuwebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/noda_restaurants_in_charlotte_nc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/kewevipakadesawonup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/40816526784.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B95 5040 bytes
SHA-256: 75642e29e32a19b8518c7ecc33e060385facd7ea38f1e7e65318dde8f8c665f4
font_01_sfnt_off00018c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C94 1716 bytes
SHA-256: 70b844f74996fcee5e1d27ce90af7085dab18ef8498285b96f5f41c426451930
font_02_sfnt_off0001953a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1953A 12752 bytes
SHA-256: 29d4e55913a5530e17612e0d0cb4f93463bce25d6d261a6d37c528af1df7250f

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