Malicious PDF — malware analysis report

Static analysis result for SHA-256 f551aeb5184d2639…

MALICIOUS

PDF

46.6 KB Created: 2020-08-06 01:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcf62f2e08ac46d9861577e60a00453e SHA-1: c73be38e0d5c852f6b5ec8a368edde4476efa9e5 SHA-256: f551aeb5184d2639668be3a9320bbf7040c48b6b58b613e4eb280fa5ace4e43e
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=sensory+play+research+pdf', which is a known malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware delivery.

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=sensory+play+research+pdf In PDF document text
    • http://files.barbaraminorenamels.com/uploads/1/3/0/9/130969237/beposogixo.pdfIn PDF document text
    • http://files.jobolyn.com/uploads/1/3/1/3/131380279/lovawojomajakijegi.pdfIn PDF document text
    • http://files.baretablecatering.com/uploads/1/3/0/8/130873927/vefofalasalewu_tofufa.pdfIn PDF document text
    • http://files.multiaxis.llc/uploads/1/3/1/3/131379833/7645092.pdfIn PDF document text
    • http://files.firstaidforall.org/uploads/1/3/1/6/131606121/fipigukedi.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/1/0432/2741/4696/files/nesexeranesemes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/sonezakupasesebisasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/vozafir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/rojefolusoxivawezubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/81771213788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/90479190423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8277/files/pomalijudukel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/gajadebamul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/64180177398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/25568709530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/16503343233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/fumipagexe.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9C 5108 bytes
SHA-256: e3e01cab2432288ad89a01a6957fd4c9805f6ee91717cb4dbfb8361b31569e46
font_01_sfnt_off00007ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE2 10064 bytes
SHA-256: df2cbd2dae731cec53b6f74adbfc06886cc4ed6cbd7d5ad17b4c391546a3caf3
font_02_sfnt_off00009f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F0C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176