Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9e8232f9aee350…

MALICIOUS

PDF

36.8 KB Created: 2020-08-01 16:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f27d5cc19d97bf9f21967ecbe6c37a38 SHA-1: 34185ba0c993fc8f85a5af7defaf782a05091dad SHA-256: fd9e8232f9aee35041d2e19ccf3c8079af87fc0df914020453aa928e7fb89bf7
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=instalike+apk+download'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The presence of a 'download button' heuristic further supports the lure mechanism. The document body, though heavily obfuscated, contains the redirector URL and references to 'apk download', indicating a likely attempt to trick users into downloading potentially malicious software.

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=instalike+apk+download In PDF document text
    • http://files.randomfrequents.com/uploads/1/3/2/7/132710763/mefojexe.pdfIn PDF document text
    • http://files.sfbayareapsychotherapy.com/uploads/1/3/1/6/131607522/zugazovejorugeb-jikov.pdfIn PDF document text
    • http://files.drkayecase.com/uploads/1/3/0/8/130815437/bomevuzokikara.pdfIn PDF document text
    • http://files.pawsrehab.net/uploads/1/3/0/8/130873958/suvatagetage_pukuzena_ziwikodo.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/1/0431/2032/8864/files/90618861429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/sikofubiziwipidum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/75502343668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/kizikijuwopugebemovulotim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zexula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/nagapoziwodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/rugewogojapejixadolixirub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/gatatajamodapaxodux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/jukomumedanazokukamez.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_off00005364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5364 4948 bytes
SHA-256: 30fd0a21fdbc663e3bcf8c4bef7ab58a956055de6fa515f9bace6ac93e2db48b
font_01_sfnt_off0000645f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645F 10108 bytes
SHA-256: 6436a4dc524cb49dd952a50f1a9256f5610225b3d9d99126ad3ba8832a0136f3

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