Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbfc01a78ee1898…

MALICIOUS

PDF

40.3 KB Created: 2020-08-22 13:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8a8bbfe4f5141b1f54b71d1aeea1231 SHA-1: 8cb8660f294712905f9513c72448cbf5d74b1def SHA-256: 6dbfc01a78ee18989f31f40a94504db08f85f6cf34fc3a1cecc1a1c164097a02
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=letter+of+intent+form+template'. The document body also contains this URL, suggesting it is the primary lure. The presence of numerous external PDF links indicates a link farm, likely to obscure the malicious redirector or to distribute content. No scripts were extracted, but the heuristics strongly indicate malicious redirection.

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=letter+of+intent+form+template In PDF document text
    • http://koneforur.stjohnlutheranchurchjenison.org/uploads/1/3/0/8/130874655/diduvopumawi.pdfIn PDF document text
    • http://files.muralsbymckell.com/uploads/1/3/1/4/131406140/1249128.pdfIn PDF document text
    • http://files.courtneyrivas.com/uploads/1/3/0/7/130775856/3876461.pdfIn PDF document text
    • http://files.stressfreeteach.com/uploads/1/3/0/9/130969775/7006602.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/1/0431/2917/6232/files/47002045866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/35941924848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/reviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6654/8373/files/43776997362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/zaxufejazenege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/removing_crayon_from_clothing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/catastrophizing_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5060/5461/files/canon_eos_600d_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/wesujowakivosozagavinun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/58614711295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9862/7495/files/sosibemusuzipijotuk.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 2

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_off000060a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 4812 bytes
SHA-256: 08e6fafba1b0b5cb813eabbd51e4014abf2304f41d68a03103f9d37d4f072c31
font_01_sfnt_off000070ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70ED 10468 bytes
SHA-256: ac19ae58b515bc91f0eb172cda99405d7818e24e00c5f981d6ed8bbe6ddf74f7

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