Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e69ed2e10118dc…

MALICIOUS

PDF

37.9 KB Created: 2020-08-03 23:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b831a74d789b7c3472160cbc1311183 SHA-1: 5882677917d917eddfd949b2a0fa4c7447173541 SHA-256: 81e69ed2e10118dc0c7a9698ade6a27666c4e0ae4271890b19d0bc1ba8841863
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text suggesting it is a lure for a document titled 'Administra

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.cc/pify?keyword=administra%25C3%25A7%25C3%25A3o+de+recursos+humanos+george+bohlander+pdf In PDF document text
    • http://files.mypittsburgchamber.org/uploads/1/3/1/3/131379732/vipot.pdfIn PDF document text
    • http://files.insomnilacq.com/uploads/1/3/1/4/131454316/ce438c4ecec406c.pdfIn PDF document text
    • http://files.hsvsnycslay.org/uploads/1/3/1/6/131637073/terexarowa_vodiwax_kumuliripom.pdfIn PDF document text
    • http://files.ourmotherslight.com/uploads/1/3/1/1/131163943/1646228.pdfIn PDF document text
    • http://files.sandimorais.com/uploads/1/3/0/9/130969551/53555dba5c.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/1/0437/1320/0278/files/xedekebuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/67585962977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/46937552993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/85409494139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/saran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/3845071496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/php_multiple_constructors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/gezemutedovanilolezesufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/73173211665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/pink_vissual_pass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/lonoluluwowar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/partynextdoor_p3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6689/2186/files/53842522574.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F46 6200 bytes
SHA-256: 1ca2eed2638513e394b2a1287840fb87bfc2f72da73169569b15f4e210ced96a
font_01_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 12048 bytes
SHA-256: 523aa8c767ff5dbb30fe5c8b448a9668b14ee5e17bbcf14a4d8410e9a656096f

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