Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd544e315cdeb39…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 19:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6117a79a340b9e7f9177976b68ff0ba SHA-1: cc109f9aca35ec40c0554fe093d9ca9971f57369 SHA-256: 3fd544e315cdeb397257cdf6453e5b3f0c1ad117e5ed883bb6bcfb0d03756053
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 as a download for 'Shazam for windows phone'. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged by PDF_SEO_LINK_FARM. The presence of a visual download button lure reinforces the social engineering aspect.

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.cc/pify?keyword=shazam+for+windows+phone In PDF document text
    • http://supel.kenanleparc.com/uploads/1/3/2/7/132712207/tepukefutogob-kesatew-gofisob.pdfIn PDF document text
    • http://files.aliceannephotography.com/uploads/1/3/1/3/131379447/xisejexopore.pdfIn PDF document text
    • http://nokube.tjmartialarts.com/uploads/1/3/0/9/130969204/xujugal.pdfIn PDF document text
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.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/1/0433/0687/7080/files/69901941500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/16060002802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/76947413262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/8883/8555/files/simple_complete_predicate_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/58012952457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/71831787891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/46841473073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6661/5966/files/allianz_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/naxutupululupawobut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/19655606686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8833/7303/files/angielski_wszystkie_czasy_wiczenia.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_off00005b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4A 5496 bytes
SHA-256: 2a32b789e5e84d00652dc728a271948f2818de93dd03bfb2bf4b98af037e5fd1
font_01_sfnt_off00006ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DED 10140 bytes
SHA-256: 574997cf5d0a4c085c2f41e617556e7f725695aefac0806122dc0a56bdda7787

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