Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bc031953b4925d…

MALICIOUS

PDF

35.0 KB Created: 2020-08-08 10:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59e02b3e17f1c3456b0e4d0789fa67f1 SHA-1: 8414bdf886445ca058fbac5908eaaa87a49dedfb SHA-256: a8bc031953b4925d01100095b567cd7651689733a19402000e82cddda34ce84d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=catalogue+daikin+2020+pdf'. This indicates the document is designed to redirect users to potentially harmful content. No scripts were extracted, but the presence of numerous links, including the malicious one, strongly suggests a social engineering attempt to lure users to a 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=catalogue+daikin+2020+pdf In PDF document text
    • http://files.designinghealth.org/uploads/1/3/0/9/130969742/wurekud.pdfIn PDF document text
    • http://files.carlosboix.com/uploads/1/3/1/4/131437276/9215426.pdfIn PDF document text
    • http://basete.abaofiowa.org/uploads/1/3/0/7/130776542/zikev-gakipevitale-jagema.pdfIn PDF document text
    • http://files.xplorcolombia.com/uploads/1/3/1/6/131636903/1563306.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/1/0428/9835/8432/files/32377204601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/30039121440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/barbary_coast_trail_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/reflection_and_refraction_of_waves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/vunudivixizadedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/abordagem_da_pesquisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/78334035501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/megetuvefitirikikiwuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3423/files/jasozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/6879544179.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_off00004b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9A 5180 bytes
SHA-256: e6a5ba388efa497dbed11aebef71333d648df4d61867ade5f439f265ce957458
font_01_sfnt_off00005d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D52 9968 bytes
SHA-256: 5a22b690d84c25cd85885bc87ff6a62fd9a77ffd003c3694c4c05d2747329b9b

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