Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf9bbb029969299…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 21:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e9f7ae37917251ab457fcf7c68bbf79 SHA-1: bb378b3037fed3115a62aaf2c46b4b12559c1541 SHA-256: ddf9bbb029969299be982b21459ff976e97a8a69834a68f1e79fc551e4ff761d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=early+humans+worksheet+pdf', suggesting a lure to disguise malicious activity as an educational resource. The ML classifier also strongly indicated maliciousness.

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=early+humans+worksheet+pdf In PDF document text
    • http://ribelogad.printingminocqua.com/uploads/1/3/1/0/131070993/0b901.pdfIn PDF document text
    • http://vaves.ship504.com/uploads/1/3/0/8/130813054/remupes_xivamaniwi_supifu_kizili.pdfIn PDF document text
    • http://files.cameronmarketing.com/uploads/1/3/0/9/130969339/jeforix-pazuju-jadokegamus-guzimekazoda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/57743877790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/23896446157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/lesowotukuboxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3727/7855/files/mapegamagofiromox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/xipazagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1320/0278/files/zenax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/gurikegore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/31353812329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8256/3232/files/kowilejiluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/naxedajaxelotuzo.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC7 5332 bytes
SHA-256: 50fa684ed70b4e23a5e0b4f100afd9038c5208b2e8e8cfde62c7ebe47dc2f837
font_01_sfnt_off000070dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DD 10100 bytes
SHA-256: f5550d7ec0b32c6bb639d67cd19fb50ecc9380d43ec9c64ec25ce0188690eaa4
font_02_sfnt_off0000936f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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