Malicious PDF — malware analysis report

Static analysis result for SHA-256 634576b97163884e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-14 08:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50da8e7b4fbe39acdcbd0b0c500a722c SHA-1: a26e10217b65c9cb12839cd1bbee1a1b254caca5 SHA-256: 634576b97163884ed2b5f8dd930898c950d029e21d1f201ca8a5decf352a9629
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious content. The heuristic firings confirm the presence of malicious redirectors and a link farm, indicating a phishing or malware distribution attempt.

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=haute+route+guided+ski In PDF document text
    • http://files.birichinokids.com.au/uploads/1/3/0/7/130739404/5496613.pdfIn PDF document text
    • http://files.barbakoffdesign.com/uploads/1/3/0/9/130969992/vivebasawibiwop.pdfIn PDF document text
    • http://files.londonpoetryopenmic.com/uploads/1/3/0/7/130738778/b68664ccbdb72c2.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/1/0440/4533/6726/files/dizuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/46125021580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4971/2806/files/runolot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/barajakelijes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/76252470913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0725/9302/files/understanding_computers_today_and_tomorrow_15th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/jidagakesuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/relative_clauses_exercises_1_bachillerato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/99097643438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/86909075978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/muguzekibopajefepexokidox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1611/files/lozurawuwesobixejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/69518844174.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 3

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_off00006933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 4764 bytes
SHA-256: 0b5605b5e0b6d727949e64a0887c30ca3ec91bc8396e12907c707f61d5d866ba
font_01_sfnt_off00007977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7977 9752 bytes
SHA-256: ab95723c6fe4cf103a142ed084eb7cb8faa1b11a61aff661c8a2182ad5b641c4
font_02_sfnt_off00009adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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