Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b91ad53d777920…

MALICIOUS

PDF

71.2 KB Created: 2020-08-06 07:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cea48d0707693d2e86bf12a23ce8d86f SHA-1: 415b9b89b1abc074d3b653d9f0feaaf8695a3cc9 SHA-256: 70b91ad53d777920d3ca7952f9560f50c5e4d5dfa4c178490b6d17eb6ac44f08
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious SEO farm, masquerading as a manual for a Proliant DL380 G5. The ML classifier strongly indicated maliciousness, and the PDF structure includes numerous links to external PDFs, many hosted on Shopify, likely for SEO manipulation. The primary malicious IOC is the redirector URL.

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=proliant%20dl380%20g5%20manual In PDF document text
    • http://files.bestlastdances.com/uploads/1/3/1/6/131636726/10ecce4904.pdfIn PDF document text
    • http://jivudor.geoprogrammes.com/uploads/1/3/0/9/130969744/55130.pdfIn PDF document text
    • http://rubebotum.rtpliving.com/uploads/1/3/0/8/130814411/65a16f10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/95475272983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/77980585726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/41407933520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/77189912530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/86797601530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/jiwuxujuwatewezasanovifat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/five_go_to_billycock_hill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/pomomudiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/automatic_pump_control_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/bapow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/dajesefezaduvijiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/cheshire_cat_blink182.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 1

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_off0000cd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD82 5356 bytes
SHA-256: de3519b58d40302509753d63862664d3433d3d763c625353c797b882df693509
font_01_sfnt_off0000df89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF89 10080 bytes
SHA-256: 649fd2e1ea0ddc5feeeee861daf55658b127a4ab9ea771708056aeaf93522e87
font_02_sfnt_off000101c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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