Malicious PDF — malware analysis report

Static analysis result for SHA-256 857500235f508929…

MALICIOUS

PDF

40.1 KB Created: 2020-08-16 17:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f10ff6ec53ae9222a2a8754cf37bb19c SHA-1: bd8bb291125d858c3194d3419d42db24bb22e382 SHA-256: 857500235f5089296d44395eb466e311e8bb557ac593f5b45c72ea39de9bd991
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to redirector infrastructure. One prominent link, 'https://ttraff.com/pify?keyword=huawei+p8+lite+android+8', is identified as a malicious redirector, likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to drive traffic to malicious sites under the guise of offering a download.

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=huawei+p8+lite+android+8 In PDF document text
    • http://zumadi.cypressbaybaseball.org/uploads/1/3/1/4/131408100/dobit_xelitedoto.pdfIn PDF document text
    • http://ketebe.blizzardandboo.com/uploads/1/3/0/7/130740510/tonisabutadina_niruwixuzotag_femetutesut_ruvoj.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/1/0432/3773/6603/files/10230815787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/bupovevolaritixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0225/files/30288362735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9114/8454/files/xizunijilevadigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/kibep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/98434089584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4275/8053/files/38384118125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/65132426061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2620/3302/files/9533959716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/bivijozinunixixakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/tewaxezuximawu.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_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 5020 bytes
SHA-256: 84edf738b8cc5383277b9c8fe962c4dd8ccd9e68142c15804f7e618e3f8f57f6
font_01_sfnt_off000071f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F1 9940 bytes
SHA-256: 8ea870a8cc6ba343e38f6003b99dc36a30b18759eebc50abc04decd48f6f6f30

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