Malicious PDF — malware analysis report

Static analysis result for SHA-256 7539f9ec9ac32d3e…

MALICIOUS

PDF

39.8 KB Created: 2020-08-21 18:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68ca059da5b1aba513e28ffe423d1d2e SHA-1: 43d0ae232e741643f5c89864c3521faac9954b3d SHA-256: 7539f9ec9ac32d3e1cebb15b1163263cc73fcf898eb9a668e7ec5369f187e452
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and SEO link farming, specifically pointing to the URL https://ttraff.ru/pify?keyword=credo+catolico+pdf. This URL is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in a phishing or scam attempt.

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.ru/pify?keyword=credo+catolico+pdf In PDF document text
    • http://files.nataliebeephotography.com/uploads/1/3/1/0/131070112/1006130.pdfIn PDF document text
    • http://files.sacredgeometryalchemy.com/uploads/1/3/1/3/131383045/0b23844ce9fcb3a.pdfIn PDF document text
    • http://files.missinglinkarchives.com/uploads/1/3/0/8/130874403/mekukarepuwago-kilogavuvamejo-dobewiwidusono.pdfIn PDF document text
    • http://files.pwcasinonight.com/uploads/1/3/0/9/130969045/nitivit.pdfIn PDF document text
    • http://files.frankgolden7.com/uploads/1/3/1/4/131453588/c13ea66cc45dbad.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/1/0431/6784/2459/files/bodyboss_method_fitness_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/bavinixasowev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/forming_a_concrete_sidewalk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0091/4343/files/banking_awareness_by_arihant_publication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/zogoladefodok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/gaxinevadegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/florida_durable_power_of_attorney_form_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/65776994703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/xilibutikaruta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/tewewefiriwibufaxisakemi.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 7

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_off00005fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA6 4876 bytes
SHA-256: 020d22568b6d322eafdaa5f9bac807ecea312b50a31bd5be3db079bd16f57e4f
font_01_sfnt_off00007046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7046 10136 bytes
SHA-256: f722fc8469e4637cb66f2727cc7e5b166f7aa65648a02d6bad2424b367e4c286

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