Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a40ac18c786860…

MALICIOUS

PDF

44.3 KB Created: 2020-08-22 07:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d3af5118de694eae051c6a418ec6fcd SHA-1: c16e1f042059d094d995496eb0fa550ad7ee6f4a SHA-256: 76a40ac18c78686028b7c30c085407be73880dcb4e5eeb8f3c33f009242603bd
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a mass of external links, many of which point to SEO-optimized PDF files, and one critical link to a known malicious redirector. The document body text, though obfuscated, contains the phrase 'Engineers australia pay guide' and the malicious redirector URL, suggesting a phishing lure. The presence of numerous PDF links and a redirector indicates an attempt to drive traffic to potentially malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=engineers+australia+pay+guide In PDF document text
    • http://files.helenvanstolk.com/uploads/1/3/1/3/131383580/nedubagomowop.pdfIn PDF document text
    • http://files.nancyives.com/uploads/1/3/1/0/131070374/reguniwutedar.pdfIn PDF document text
    • http://murafim.heartbeatyoga.ca/uploads/1/3/0/7/130739059/finofiruxanakogokuta.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/1/0432/0490/3069/files/xotobifamufofibix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/albumina_humana_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/poc_long_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/demaxofivefitoliku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/bodies_by_rachel_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/43145406791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7673/1558/files/add_subtract_multiply_divide_decimals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9576/files/vokutowarivutiramorusez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/44882169105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8705/3475/files/68098724668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/lisa_ann_tonights_girlfriend.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 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_off00006a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A61 5188 bytes
SHA-256: 1795543aa979d862ad8aa406950a69b1986c8ef4eaaa61ebb253636d367c0bc8
font_01_sfnt_off00007c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1C 12496 bytes
SHA-256: b83023733068454f73fd2f00d4fcdcd8f936955be55fc97e8b0d98535690d683

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