Malicious PDF — malware analysis report

Static analysis result for SHA-256 3101b23786698d0c…

MALICIOUS

PDF

72.0 KB Created: 2020-08-19 23:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f75aeaa66ac9061a695932b51c966eb SHA-1: e8a1339fdfae009189d70f4d6091b085048f2df1 SHA-256: 3101b23786698d0cb776a5219807942e173cef8ab6fb79825c5b7d04e59c9e7e
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. One of these links, 'https://ttraff.cc/pify?keyword=hex+color+code+in+android+studio', is known to redirect to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the direct user-facing content.

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=hex+color+code+in+android+studio In PDF document text
    • http://files.simoncdrew.com/uploads/1/3/2/3/132302993/6138531.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/1/0431/0899/1143/files/concept_of_public_relations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/asatru_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/69690975751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/39748564944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1895/6448/files/lowes_brevard_nc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/muritosuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/20935277570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3884/9696/files/91415210600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/38288445425.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000be54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE54 4960 bytes
SHA-256: 2c23ef451a883c6a91009f696ae87d92cf6c99751dda76bda31771636c4caba7
font_01_sfnt_off0000cf36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF36 14704 bytes
SHA-256: 2b9e7951cd3c42de432a00b96ede7876588fa6e4129f77f78209bf53ec95ceed
font_02_sfnt_off0000fdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF9 16088 bytes
SHA-256: f1368e0d82604bf55bb40b01ac61c381dd14042cff43d793d5e70c6199447dc1

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