Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d36a92ff95faad…

MALICIOUS

PDF

35.6 KB Created: 2020-08-21 12:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d18a8a9f593dd39e4eac8d05bff668d SHA-1: 41c6ba7e677aed9e9cc17546aec1d783c9554636 SHA-256: 73d36a92ff95faad30ee4a87c4f14911c5e6db09856d79ae22d331f53e747c3d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting it's designed for SEO-based phishing. The presence of a 'download button' lure further supports this. The primary malicious URL identified is https://ttraff.com/pify?keyword=picsart+png+background+hd+2019, which is used in conjunction with numerous other links, many pointing to Shopify-hosted PDFs.

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.com/pify?keyword=picsart+png+background+hd+2019 In PDF document text
    • http://files.report2dancefloor.com/uploads/1/3/1/4/131483184/2b32236a7e.pdfIn PDF document text
    • http://wapotozuz.phildicksonplaysmusic.com/uploads/1/3/1/6/131636664/soligasaxetavukiru.pdfIn PDF document text
    • http://files.c4dm.net/uploads/1/3/0/7/130775506/6486740.pdfIn PDF document text
    • http://files.post37.com/uploads/1/3/0/8/130814492/6882512.pdfIn PDF document text
    • http://fovimebuv.sharimycek.com/uploads/1/3/0/7/130739974/roxupubanudawar_xovamo_vunedesej_paxoxewitupi.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/1/0431/5742/2229/files/29978199648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/leluduxoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/63729933935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/25366336592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/15636255739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/50006937467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/8646164914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/legufut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/antenatal_exercise_in_malayalam.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 2

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_off00004d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D32 5992 bytes
SHA-256: 6a74201592ee2b7cb5813be177275678948ce64a63d14e4f9686fc8ef4f27b82
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 9348 bytes
SHA-256: cdf7a2402d4614d76f757147444fa20c6eb997d56366b9b3cd90df3418aa46be

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