Malicious PDF — malware analysis report

Static analysis result for SHA-256 56fffec70a850260…

MALICIOUS

PDF

61.2 KB Created: 2020-08-04 02:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5423d5e7def6f5609fee4eba110107ca SHA-1: 3bf2b34070eca74a9c346becb5f176e9f9c1b9e5 SHA-256: 56fffec70a850260c6a6f3a6e5272c80e654f5ae880ec1f181931ac333b9d5b1
194 Risk Score

Malware Insights

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

The PDF contains a deceptive document body referencing a 'Caesarean section procedure pdf' and includes numerous embedded links. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', which is likely the primary mechanism for delivering a subsequent payload. The document body also contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.com/pify?keyword=caesarean+section+procedure+pdf In PDF document text
    • http://files.youcannotunsee.com/uploads/1/3/0/7/130775979/zifop.pdfIn PDF document text
    • http://files.wilkespe.com/uploads/1/3/1/3/131379320/zevozogapek_dizuj_sosovuvel_sapebinepedew.pdfIn PDF document text
    • http://files.creativeaginginnyack.org/uploads/1/3/1/3/131379700/kuvot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/99879825239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/68260261538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/88689749148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/22602957462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/refipenudofepidadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0461/7119/files/97187482088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/tomilopedubagositotisek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0358/4423/files/34076402299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/61598613372.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA636 5024 bytes
SHA-256: 7f98153859c3585b80fbf66d4ce8d965bf7e4de8b1b3b678cbaf72c505593720
font_01_sfnt_off0000b757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB757 10056 bytes
SHA-256: c712484a538c71706eb2a56cad50d7681a04758ebabdd0f13aa287aec73e7908
font_02_sfnt_off0000d995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD995 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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