Malicious PDF — malware analysis report

Static analysis result for SHA-256 450b1620dff831e6…

MALICIOUS

PDF

65.8 KB Created: 2020-07-31 14:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e00b0a985e6210f12d02ee7d52ede095 SHA-1: c420968a5945f1d68101809ab0c2de9b10777d9b SHA-256: 450b1620dff831e670a12bc14578531cba2c03ae65fb16fdc180288d0b00fbfd
194 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Keto cookbook pdf free' and embeds a link to a known malicious redirector. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to contain metadata related to the lure. The primary attack vector involves redirecting the user to malicious infrastructure via the embedded URL.

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=keto+cookbook+pdf+free In PDF document text
    • http://files.nickeltown.org/uploads/1/3/0/8/130874304/8410948.pdfIn PDF document text
    • http://files.ameliasclosetfilm.com/uploads/1/3/1/0/131070688/pagebesaxa.pdfIn PDF document text
    • http://files.edmonsoncounty.org/uploads/1/3/0/8/130813985/e838ba9f.pdfIn PDF document text
    • http://files.westhoveacupuncture.co.uk/uploads/1/3/1/4/131437848/80216d0beb.pdfIn PDF document text
    • http://files.lauraswinkfineart.com/uploads/1/3/0/7/130740624/mugaxanizivasu.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/1/0434/7248/6566/files/pilasifugasowotinedur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26225030347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/zejekusufafin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/paveroviraxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7033/files/68065308195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4974/files/xavawuwavokakatululebub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/tatakepumame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/daremaxotefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/sukawuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/70942742673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/dujijozusilajuloximol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0005/3408/files/jororidezixalidofijebet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/duvakizuxuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/finenukasoletap.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_off0000c59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC59F 4536 bytes
SHA-256: 6cd0751b14d4e1b009239f1b9f0599147b7be7962d44b96199ab715268925ce2
font_01_sfnt_off0000d517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD517 10804 bytes
SHA-256: 2eb5f15bbedded9558585a657e01d03e675da618ac3b71e4345c5c847a77a284

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