Malicious PDF — malware analysis report

Static analysis result for SHA-256 078a66e6e967bf9d…

MALICIOUS

PDF

57.1 KB Created: 2020-07-31 14:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61005d9df4396b13bae192d5f2aee458 SHA-1: c7424a14bcb7a040c6ea0311e9d536f51bfa7a91 SHA-256: 078a66e6e967bf9d4ae29db68cd9f32b654ad2c5669d15109fb46362b14fa1a5
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and link farming, specifically pointing to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, appears to be related to a medical topic, likely serving as a lure. The presence of embedded URLs and the ML classifier's high confidence score further support the malicious nature of this document.

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.ru/pify?keyword=apnea+obstructiva+del+sue%25C3%25B1o+y+anestesia+pdf In PDF document text
    • http://files.susanljohnsonart.com/uploads/1/3/1/3/131384335/veninakegaxawozalufu.pdfIn PDF document text
    • http://files.marlobarrera.com/uploads/1/3/1/4/131437157/80ea42e065628.pdfIn PDF document text
    • http://files.coachingandcounsellingottawa.com/uploads/1/3/1/6/131606257/1941667.pdfIn PDF document text
    • http://files.mrscooke.com/uploads/1/3/0/8/130873851/zuzatesajanom-lujofaden-togizuka-bofekepejeresif.pdfIn PDF document text
    • http://files.foundationforhopeinafrica.org/uploads/1/3/1/8/131872096/mimemirerabopew.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/1/0437/6412/1752/files/tifusumenizemebula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3008/4760/files/porifulugapefano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/73879680280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/papumusadesisiresovajoniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5121/files/35252911995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4459/2021/files/vojimagisumutawur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/pemoritirudaxadigana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/41164058616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuketunaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/24184395791.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_off00009d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6D 5532 bytes
SHA-256: 905f98576a81a9b4f544a38bb7fa530ebd033446af9af0675f2da27a43f20702
font_01_sfnt_off0000b003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB003 11236 bytes
SHA-256: fe09d5af7ca5aebc08cc6f021868f22924706958419542ae66e2e9143bd7c42c

Open this report in the interactive analyzer, or submit your own file for analysis.