Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfcdf4e7a21cfd90…

MALICIOUS

PDF

34.3 KB Created: 2020-08-02 17:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d13a1ef39584404ddb14f4cdf3f9421c SHA-1: 79652e4a6ed9131035844f7598f6aa7cd8cda71f SHA-256: cfcdf4e7a21cfd90f8ccb223c16f60e129810eaa19f5e44798d393f58714ca65
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service that is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'breathing exercise gif'. The primary malicious URL is https://ttraff.cc/pify?keyword=breathing+exercise+gif, which likely serves as a gateway to further malicious content or phishing pages.

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=breathing+exercise+gif In PDF document text
    • http://files.keithcochrane.com/uploads/1/3/2/6/132681812/kokonedo.pdfIn PDF document text
    • http://files.thehuffproject.com/uploads/1/3/1/6/131606046/lafelenoka.pdfIn PDF document text
    • http://files.coachchriswoodside.com/uploads/1/3/0/7/130739415/1916471.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/1/0433/0035/6251/files/zisegorudorogojeturusawap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3326/3253/files/jupoxil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/14112697044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/78907765709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/fujekugatuzasuxaguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/nuzixupozasifulowixalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6893/2767/files/zadagenopakuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/beatles_song_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/15841398220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/fokibirutewebetiwosex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/sefepokoxikabupog.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 4

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_off00004a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A10 5228 bytes
SHA-256: c5ff35c5aa6b59d62ae4694dc3806dfebfb97e5a9bd80f29e5ed4f6b716bd4cc
font_01_sfnt_off00005bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDD 9672 bytes
SHA-256: f7c0057dd140fee1ce717e53ec372dce6a37b8ebe527afd2ecad523f398d3448

Open this report in the interactive analyzer, or submit your own file for analysis.