Malicious PDF — malware analysis report

Static analysis result for SHA-256 8880ec775a446368…

MALICIOUS

PDF

35.1 KB Created: 2020-08-26 05:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d8883646807eb7abaf303bc274ec6ef SHA-1: c60e17d3d6233eb4a4bba1fa493671fefeeeda6c SHA-256: 8880ec775a4463682fc0c20cdecd75d40a86cfa49da3d431440339649de3acc2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a redirector URL, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'freemotion workout routine' and the malicious redirector URL, suggesting a lure for users to click through to a potentially harmful site. The presence of numerous PDF links further indicates a link farm or SEO manipulation tactic.

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=freemotion+workout+routine In PDF document text
    • http://natuto.the-blessedseed.com/uploads/1/3/1/4/131413418/zasotizizekalagiwe.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/1/0438/4745/0789/files/10165065475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/zewazapedidozejiwis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/25277847380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/dofulujafepilat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8048/1958/files/sphax_1._8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/20783715251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/87724112861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/demizimux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/tufixamitosuxuna.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 5

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_off00004e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E63 4524 bytes
SHA-256: 2f2f031b8d0598fc25bebc80800ae51f328eabe9f2702a73eef1afa578b9d112
font_01_sfnt_off00005dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 10180 bytes
SHA-256: cbae89fe1d994a97578164596b768a2b5eeb928d7ad9f3a46e40ada800c6febc

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