Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c9bcb284a59362…

MALICIOUS

PDF

41.4 KB Created: 2020-08-08 18:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b5271d950013c4a0a68c1d9f1490cb5 SHA-1: 860d6a3518ef7a8809d870c256923186f4bb1c15 SHA-256: b7c9bcb284a59362c105159dffbbbfbf159bb17810787784eca620e77ecfe9d9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=budget+worksheet+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, contains references to 'budget worksheet pdf' and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users to malicious infrastructure through a deceptive document.

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=budget+worksheet+pdf In PDF document text
    • http://files.xaletpigall.com/uploads/1/3/0/7/130738739/de06ac46ab180.pdfIn PDF document text
    • http://files.downingtownswimacademy.com/uploads/1/3/1/4/131453219/b58539fa67b0289.pdfIn PDF document text
    • http://files.turnsofphrase.com/uploads/1/3/1/4/131410009/noxugifivasuxakazob.pdfIn PDF document text
    • http://files.liranzofit.com/uploads/1/3/0/7/130776401/fomavesemu_waduxile_juvifigot_xifiritunodeted.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/1/0430/9660/4825/files/rujozirebovokutunajuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/68291661757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2149/9548/files/vabujubuteranuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7111/0308/files/58400235093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/23933249622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29121996303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/tisezivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/83575633734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/70338436261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/35532522783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/36831297198.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 8

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_off000063f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 5264 bytes
SHA-256: e7c95221564e35d23a01657d97984f94c810615601650049ec58dbf7f03e521b
font_01_sfnt_off000075f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F8 10276 bytes
SHA-256: ac51bd59eaf1bd6f90c74804cc6398ab950c7da741b9910404a73dacf1f1e8b6

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