Malicious PDF — malware analysis report

Static analysis result for SHA-256 153514cac988d6a2…

MALICIOUS

PDF

47.0 KB Created: 2020-08-22 15:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af5e17ed9255890f2eee5559b4d149e6 SHA-1: 3daafe4686bc188924bc191fff0c1d4a6fe4703f SHA-256: 153514cac988d6a2bdf23c87e1fe43fb62cee36d264b51235c92e1ff5899d576
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, disguised as academic materials. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a link farm designed to lead users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ap+chemistry+lecture+notes+pdf, which is likely used to host or redirect to a malicious payload.

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=ap+chemistry+lecture+notes+pdf In PDF document text
    • http://files.fireartsarcata.com/uploads/1/3/2/6/132695472/a06df4.pdfIn PDF document text
    • http://files.emmamaitland.com/uploads/1/3/0/7/130775865/lotalalatofozu.pdfIn PDF document text
    • http://zebute.birchbots.com/uploads/1/3/1/0/131070487/mewowapaxovag-kexuxusomamu-vezeb-kiguwex.pdfIn PDF document text
    • http://files.frankicolett.com/uploads/1/3/1/3/131379830/ladipekige-wubekiwopiv.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/1/0434/6583/4658/files/angular_json_schema_form_condition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8709/4179/files/54291431770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/40098047923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/data_science_do_zero_joel_grus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0524/6631/files/39320215518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/dizinokerumozekagudorun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/wavokupetemuvode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/23380355254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/45546184867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/defendu_fairbairn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8092/2789/files/ti_89_titanium_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7654/9798/files/rufitujoretil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/47919713117.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_off0000794f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794F 5276 bytes
SHA-256: c3399ac0be292862d58c9e81526d82ac557199f13862851b1119660f521e4e36
font_01_sfnt_off00008b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B25 10628 bytes
SHA-256: 8e98d22bf5c2ad3b74d0f2c04e3061f428168bf49754939f5bae06bf5e442fcf

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