Malicious PDF — malware analysis report

Static analysis result for SHA-256 852204481aba16cb…

MALICIOUS

PDF

45.5 KB Created: 2020-08-22 01:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea2799451370490faf9e94f9428aa26c SHA-1: 61ac8ed196070377835a32ffba96ab7ac7bfe282 SHA-256: 852204481aba16cbd7c6f5351bef6810a1329cf4c29307b05ede3e39586e7e4e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, disguised as a free download for a construction quality assurance plan. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for SEO-based phishing. No scripts were extracted, but the presence of malicious links is sufficient evidence of a phishing 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.cc/pify?keyword=quality+assurance+plan+for+construction+pdf In PDF document text
    • http://files.monstrum-society.ca/uploads/1/3/2/7/132740277/feredulo_vefiwawuzusugos.pdfIn PDF document text
    • http://files.dogcatplace.com/uploads/1/3/1/4/131412181/gevez-lowemasig.pdfIn PDF document text
    • http://konoleja.precisionstoneworksinc.com/uploads/1/3/0/7/130776760/wawuzupador-lureraxedaxoxiw-rupogi.pdfIn PDF document text
    • http://files.pheasantruncavaliers.com/uploads/1/3/0/7/130775432/rematonanabifoxi.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/1/0435/3212/4312/files/xopizegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/10862841831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2736/5031/files/java_basic_interview_questions_for_freshers_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2039/3375/files/kijunigewotalebuwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/vakofulowujizowarokud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/rozamofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2932/3158/files/sajevubejilanivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/birisexizir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 5196 bytes
SHA-256: d601a1bdde171dfaf1831b5df303857e1418daff8c3e6847afa291bcf9260a1b
font_01_sfnt_off00007880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 9996 bytes
SHA-256: 4cfcf721f9f205f932ee389498c050e699407d3379f76e4b393ee48b2ed382ab
font_02_sfnt_off00009a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A85 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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