Malicious PDF — malware analysis report

Static analysis result for SHA-256 78bae8ed9d486e40…

MALICIOUS

PDF

54.3 KB Created: 2020-08-14 07:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9dae12f4b3c6a69fd31e827a2dfa5f9 SHA-1: 8bfe72035030bbd65059da011490be505d9126cb SHA-256: 78bae8ed9d486e4089d135f743999b52c30d6faa0542992eb3df343d6d3cbfd6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, contains text suggesting a lure related to 'happy birthday card template printable' which, when clicked, leads to the malicious URL. This indicates an attempt to trick users into visiting a potentially harmful site, likely for phishing or malware distribution.

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=happy+birthday+card+template+printable In PDF document text
    • http://files.joseluisperezjim.com/uploads/1/3/1/3/131383553/gejuxab.pdfIn PDF document text
    • http://files.trackingclubofma.com/uploads/1/3/0/7/130738993/5062284.pdfIn PDF document text
    • http://files.thesocceridcamp.com/uploads/1/3/0/7/130739159/86ae5510.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/1/0437/9105/7058/files/amenaza_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8739/6004/files/almanach_mistrza_gry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/1962257743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/xizatuvuninivedidixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5515/3303/files/99598376898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/underworld_meg_cabot_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/39842057234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5081/0014/files/22219342301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/sofogaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/62514381681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/ahmed_deedat_franais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/rixujugamel.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_off0000939c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939C 5340 bytes
SHA-256: a1f4c42190ddb22e6a3aeccf9a0cb09cce004d71444ad960f8f1e75df94206a3
font_01_sfnt_off0000a592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA592 11256 bytes
SHA-256: 7327087fea394af5b6f06abbdb40d62eb8560c313057effc43e027a3cc214cd7

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