Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3bbb4bb7097133…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 12:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ffcdf031f6379d4bc8dcc1b9c7ad96c SHA-1: 4c4c89d8432b0f07de7c393d81c576d60a689fa4 SHA-256: 9f3bbb4bb7097133e377d5d306927c68c6e4a83cc378016b166b8ebcbe55e491
202 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised with a lure related to 'movie opening sound effect free'. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm or SEO manipulation tactic to distribute malicious content. The presence of a 'Download Button' heuristic suggests a social engineering attempt to trick the user into clicking the malicious link.

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=movie+opening+sound+effect+free In PDF document text
    • http://zetus.bluepansycottage.com/uploads/1/3/0/8/130814448/6176805.pdfIn PDF document text
    • http://xevuxilu.surfacetoairsystem.com/uploads/1/3/1/6/131637814/3043209.pdfIn PDF document text
    • http://files.somoscampos.org/uploads/1/3/1/4/131453031/kaluwadarexele_juxepobo.pdfIn PDF document text
    • http://files.libationmarin.com/uploads/1/3/0/8/130874284/bevosuzu.pdfIn PDF document text
    • http://files.thefishonlodge.com/uploads/1/3/0/7/130739404/vuzekiron_fapudabeziduf_bafudakewop.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/1/0437/5805/9674/files/biblia_corona_de_jerusalen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1160/files/ludiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8502/7746/files/25978038162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/causes_of_bronchial_asthma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/75713589784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/wowurukirabuwepaxafalepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorirazapevimixawas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/damokoremovenopolumudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7693/4042/files/malerimokapojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/directors_report_2019_for_small_companies.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 6

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_off000063bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BD 5148 bytes
SHA-256: f07ab0a1029c33eeaf4ef341ac9df85fa4b8ae2c158e676cb2b707df8d7a732a
font_01_sfnt_off0000756a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 10008 bytes
SHA-256: f680d566cd48570e19b956c70503f0736e34a7fd962e6d1f07cb4f5d93198d13

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