Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f533b4529a0708c…

MALICIOUS

PDF

46.8 KB Created: 2020-07-26 21:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 909c9cf8bb3f80e3b6b56fa4a667af4f SHA-1: e82917c3483b4c86ebaaf08f2c7314fc22c167ee SHA-256: 5f533b4529a0708c22ae37233846cfb4b116e747086f349ab049cfb6c668588d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of external links, many pointing to redirector infrastructure, indicating a link farm or phishing lure. The primary redirector URL, https://ttraff.com/pify?keyword=carbonic+acid+formation+from+co2, is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'carbonic acid formation from co2', likely a pretext for the malicious links.

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=carbonic+acid+formation+from+co2 In PDF document text
    • http://files.floatingtheboat.co.uk/uploads/1/3/0/7/130740412/9fe1dc5.pdfIn PDF document text
    • http://files.dawnmoniquewilliams.com/uploads/1/3/1/3/131379748/c6869.pdfIn PDF document text
    • http://files.parismotel.co.uk/uploads/1/3/1/4/131452929/melab_gexipumaxot_loxovolipakid.pdfIn PDF document text
    • http://files.ribbonbowsandmore.com/uploads/1/3/0/8/130874189/walib.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/1/0437/9102/4280/files/91517980004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/73913067840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/60712182883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/devasajusefojiwexetem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6262/3397/files/xujakiviwegopilis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/gelukajemiridaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/38408780790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/55048767901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/debonexanorano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/jitidonanelavusopuvog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/90922453593.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3F 4920 bytes
SHA-256: b5ffb5dc53c8645d2c4c73e16448fccfbbbe42db387301403be41d701acaa949
font_01_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 10304 bytes
SHA-256: d34f8c4489193c660e55ed558b2140029ab00f91369ee463f7a7b341329ce5a7

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