Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1f0c5ecdbbdb45…

MALICIOUS

PDF

70.4 KB Created: 2020-07-30 08:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec130a93bf76c83518401da2dbf6ce77 SHA-1: 828ef30fa611f937eb4cb940b2663bdcccba9c4d SHA-256: da1f0c5ecdbbdb45c607e2b2b9f5cff324e25c4a542feecfec69f881feffa895
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and contains multiple heuristics indicating malicious intent. Specifically, it includes links to a known malicious redirector and a large number of external PDF links, suggesting a link farm or SEO spam operation. The document body is heavily obfuscated and appears to be junk data, further supporting the malicious nature of the file.

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=calendar+ortodox+2020+format+pdf In PDF document text
    • http://files.dutchtasmanianconnection.com/uploads/1/3/1/4/131438059/2034586.pdfIn PDF document text
    • http://files.arlingtontherapyalliance.com/uploads/1/3/0/7/130775197/luvoluw.pdfIn PDF document text
    • http://files.shinenewagemedia.com/uploads/1/3/0/7/130775108/598ad93.pdfIn PDF document text
    • http://files.amazingcreationstaxidermy.com/uploads/1/3/2/6/132695543/xefijiv.pdfIn PDF document text
    • http://files.schrockeducates.us/uploads/1/3/1/3/131383771/2ea0e.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/1/0437/6559/6321/files/filujoxisoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/35332288727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9724/1240/files/mevexajurajonerikeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/78552047048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/rogetoxamapodasuzoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/gopurevemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/5890597465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/33903145118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/bavogekewajuvinovizojom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/23493725146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/19479028605.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_off0000d7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AD 5112 bytes
SHA-256: 8f4dd08979b8b911b5bcded44d9f2b5236206ea740fe0886ade7bf27aa1e248d
font_01_sfnt_off0000e8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 10308 bytes
SHA-256: 39e66a8d8bbee9c06ff6f161041019fdf46a005f75b69357c71a7914841a0ce5

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