Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c374b19e566d0c…

MALICIOUS

PDF

39.2 KB Created: 2020-08-19 04:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a78831f1c6ce2d0043a9b24c4ce1814 SHA-1: 97beb3604fadde20c4a04e6f4581f0c29840cafe SHA-256: 02c374b19e566d0c5ae5fc583bfe957381a03e1d3091531cb1640af437f085da
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 (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a '2nd line us number app' and a URL that appears to be part of a link farm designed to drive traffic. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam 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.cc/pify?keyword=2nd+line+us+number+app In PDF document text
    • http://files.castletonkids.com/uploads/1/3/1/0/131070619/fd9df01b.pdfIn PDF document text
    • http://files.preserveatspringknoll.com/uploads/1/3/1/3/131379040/5439033.pdfIn PDF document text
    • http://files.cyclingcapecod.com/uploads/1/3/1/3/131398250/821735aa4833.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/1/0429/2490/0515/files/kepugaxezusuwafamukovogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/amon_amarth_discography_rar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8156/2280/files/bogipuzasafikevatoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/wwdc_2015_dates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/2011_chevy_cruze_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/95299551791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/mafalemigifariji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/gaxiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7813/0593/files/6704686356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/88305737613.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_off00004e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E55 4972 bytes
SHA-256: 27e8ac74f9bf8b4f9a45a2f8dc2dad47bf038eeefe76e8e824cd14fd2ed55b41
font_01_sfnt_off00005ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF7 10352 bytes
SHA-256: f581dff613a162fc1661c888a2fc971c6a674d57ce787f88a48ca52cd6762585
font_02_sfnt_off00008255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8255 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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