Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a780b9e9d16c90b…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 19:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4eeb86a1ac4ac969232c093be62b9802 SHA-1: 3366a93010300c07ef6e8ff1ad4d3c78fd5c7b6d SHA-256: 2a780b9e9d16c90b2f8fed6e51ef75296b297412971c7e926db9177a41d10095
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=11th+class+biology+book+download+pdf'. This indicates a phishing or social engineering attempt, likely to redirect the user to a malicious site. The document body also contains numerous links, including the primary malicious one, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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=11th+class+biology+book+download+pdf In PDF document text
    • http://files.sunpawco.com/uploads/1/3/1/4/131453818/7e79279.pdfIn PDF document text
    • http://files.matteframe.com/uploads/1/3/1/4/131411539/gurutezaj.pdfIn PDF document text
    • http://files.bugayinvestments.com/uploads/1/3/1/3/131383255/setobemubelopu.pdfIn PDF document text
    • http://ferudoj.charliehempseed.com/uploads/1/3/2/8/132815367/24c3d8fc4.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/1/0431/6676/1120/files/tolunevonodejene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/human_anatomy_and_figure_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5648/6807/files/los_cuatro_acuerdos_toltecas_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/lacrosse_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/69163725266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/tuxodubugezafag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/advertisement_copy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/50201228254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/gutamapesuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/45684671643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/zekadixipenuvivapiwitipeb.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 8

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_off00005f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7B 5676 bytes
SHA-256: 34a65fcaa5cd15fbdbedb22c1a2dbcb9f888fd40982ef912b934cbd550eec775
font_01_sfnt_off000072f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F1 10192 bytes
SHA-256: 6013866f8b955c29cd31c0309687e6c32f249f26bb2a1c71b201f4af59696e13

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