Malicious PDF — malware analysis report

Static analysis result for SHA-256 419ae4978dea2bb2…

MALICIOUS

PDF

47.6 KB Created: 2020-07-31 10:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12615418841146b42ace495cd93e0124 SHA-1: 60e1f2c1d0e429a35d7585dca5b6e764935e45eb SHA-256: 419ae4978dea2bb2752e8ad1e37d2a7c699cb0faf2f7b7b0d60a3a755071b15b
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, with a critical heuristic firing indicating it's a malicious redirector. The primary URL points to a known malicious redirector service, which likely leads to further malicious content or phishing pages. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or link farms.

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=scholarly+definition+of+social+media+pdf In PDF document text
    • http://files.geoffreyboddenandassociates.com/uploads/1/3/2/3/132303035/rizefobevo.pdfIn PDF document text
    • http://files.jeffreyscottsalsbury.com/uploads/1/3/1/3/131380094/8cbdb3684.pdfIn PDF document text
    • http://files.humblepolice.com/uploads/1/3/1/4/131437516/4c10f19581334a.pdfIn PDF document text
    • http://files.missouririverpaddlers.com/uploads/1/3/1/8/131856333/wipamefet-pusari-vafepeza-dodawuxawegu.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/1/0434/2022/1607/files/gipogevezefomusexago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/30879545118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/jumomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/tamerunag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/97992316646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/64457968845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/77247103286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90278046640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/pabofuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/41959081272.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 5

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_off00007b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B08 5388 bytes
SHA-256: 325481e2508d1aa892d15b525e548cff25a6b5364d568a9d1d913f889213cceb
font_01_sfnt_off00008d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2A 10692 bytes
SHA-256: fe230852696fdd7ea7dd86f575de8d48f49f20cd6c5a525dd03593440830d633

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