Malicious PDF — malware analysis report

Static analysis result for SHA-256 1692bfe274c5579c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-15 11:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd1e912e1a80976b05944ce047ed67ab SHA-1: 0c4989dc0e47f962c18b7040a90dc36eafeaa0ae SHA-256: 1692bfe274c5579c8b72e05cf22debbc7454982c3f78a996c49b85bc47cc41fd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary redirector identified as a known malicious infrastructure. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for users to click through to a potentially harmful site. The ML classifier strongly indicates maliciousness, and the presence of a redirector link points towards a phishing or scam attempt.

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/wb?keyword=conditionals%20pdf%20perfect%20english%20grammar In PDF document text
    • http://dujuduta.littledenblog.com/uploads/1/3/2/3/132302780/tokokoxirutoke_gaziposajozo.pdfIn PDF document text
    • http://zirele.antonio-oliveirafilho.com/uploads/1/3/1/6/131606552/pifawufamuvufopu.pdfIn PDF document text
    • http://pepisuzu.mriserhoff.com/uploads/1/3/1/1/131164250/4431275.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/1/0439/9667/6254/files/simon_bolivar_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/email_writing_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/sons_of_anarchy_torrents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/26031716614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/wacom_bamboo_software_bundle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/string_theory_for_mathematicians.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/nivivomiwuwusazenebikilad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/7981073814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/paxovubozit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/catalogo_de_cuentas_sat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/petobomapazogas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/2725575077.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_off00005415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5415 5380 bytes
SHA-256: 61ef1f0772590c98ed04651cbab04b215a1d1f8a1b0e83b72e06fd390c92a08a
font_01_sfnt_off00006633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 9720 bytes
SHA-256: 7933296c1b9ddf500504694a55d520486b34aa60cfaf3a5f015aa77cbe919b2e
font_02_sfnt_off00008758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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