Malicious PDF — malware analysis report

Static analysis result for SHA-256 7110f987670d7f3f…

MALICIOUS

PDF

45.7 KB Created: 2020-08-18 16:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf7b3eb7f5d94efcacb7627ea548682b SHA-1: f841107c270ea52f9224704c92fe8a6156c1bad1 SHA-256: 7110f987670d7f3f890d53e525877caedb106c87c869cd0d4d3e36c7a4bc59f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics suggest a "free download" lure, likely a phishing attempt to redirect users to malicious content or malware. The ML classifier strongly indicates maliciousness.

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=consumer+reports+cars+pdf In PDF document text
    • http://files.singaporeaerosupportservices.com/uploads/1/3/2/6/132682790/nipezifobavimaru.pdfIn PDF document text
    • http://files.hgoldsteincpa.com/uploads/1/3/1/3/131398109/lazejewutepixi.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/1/0431/2875/0241/files/8529439237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/4294348260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/game_activity_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0689/3985/files/apache_tomcat_for_windows_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/how_to_report_spearman_correlation_results_spss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/xofidaniforub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/48402913723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/59899110679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7081/5397/files/54557613712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9547/4855/files/repimiguvuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/pajosuxekonugu.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_off000066ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EE 5128 bytes
SHA-256: bf1e2f94e61468718b08fc5eda2778570060173dbb474de46722240a96deeda6
font_01_sfnt_off00007839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7839 10436 bytes
SHA-256: 149d5ee5db868b29810fc0ac71e051902df1d5f8740ac161836f53c27b51f8e8
font_02_sfnt_off00009bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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