Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cef44bacc3d4c4f…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 04:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3edbbd3b2fb4f1dc0d03a48d934f17be SHA-1: 63062705927049ff5fb26ba96537c9e31ece9d40 SHA-256: 3cef44bacc3d4c4fdb6937a936c0a1130b513396a4950440451c96e827573acd
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One of these links, 'https://ttraff.cc/pify?keyword=caracteristicas+de+un+microcontrolador', is identified as a malicious redirector. The document body, though partially corrupted, contains the same query string as this malicious URL, indicating the document's intent is to direct users to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=caracteristicas+de+un+microcontrolador In PDF document text
    • http://files.northpointcg.com/uploads/1/3/2/6/132682792/zubapofovogazim.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/1/0433/5465/2821/files/download_john_wick_2_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/7213068112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/74799617858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/lesopazirakamerogovefodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/bible_archeology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/60281548895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatamukizulenekop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/rifuwadavulekusezebuvilib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/16887091969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9898/0757/files/rizafofosowekuwoge.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
🗂 Part of campaign: dalessandroscouting.com 4 samples

Related samples 3

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_off00006480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6480 4992 bytes
SHA-256: bdd6c3ecac1b9dfd9e1078aa1ecabcfc7cbf8b6ae46158e7b23414116ceabed8
font_01_sfnt_off00007555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7555 11012 bytes
SHA-256: 739af227d52ad99892db0ed18677afdc43a7db4ee8dd59afcb47353acbb802e9

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