Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73437e607ce9dcc…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 21:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7711b1fde31de7272ab8c09c03e43a0e SHA-1: b203fc16f1684b0b796d2fa8717c72bc6f91ed7c SHA-256: a73437e607ce9dcc16c761f84c851c635cba919c73eaa78678e74547884be2c5
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, including one identified as a malicious redirector. The presence of a 'download button' heuristic and the document body containing a lure for 'free printable wedding border templates' suggests a social engineering tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=free+printable+wedding+border+templates, which likely leads to further malicious content. The file also contains a large number of links to Shopify-hosted PDFs, indicating a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+printable+wedding+border+templates In PDF document text
    • http://pejudo.oldtimeradioreview.com/uploads/1/3/2/6/132680813/6592979.pdfIn PDF document text
    • http://files.falconfamiliesofky.afaparents.org/uploads/1/3/1/4/131453267/465011.pdfIn PDF document text
    • http://files.sharing-international.org/uploads/1/3/1/3/131384400/dekonutirukobotu.pdfIn PDF document text
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.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/1/0429/4829/6857/files/bomukufabijubonaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/ejercicios_con_numeros_romanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/xuxokakuxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/monazata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8948/4189/files/47944989263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/gomafogatajalexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/55362451418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/asamblea_nacional_constituyente_guatemala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/27517502063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7163/3563/files/american_gods_season_1_torrent.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_off000068ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BA 5468 bytes
SHA-256: 3cc6cd3727dd144331e424a8320d26028edc7a70525f9d668b5b96d6622fdaf7
font_01_sfnt_off00007b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3C 10060 bytes
SHA-256: cb195283f33a749ae4813ccccf7c0a9ce373de6c2a936c498aa9c1d6589d91bc

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