Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bc864eec1db40f…

MALICIOUS

PDF

48.5 KB Created: 2020-08-20 08:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f5a420e4bb8b3db2d33afa3c8645c18 SHA-1: 2bd7a561d119f2c6ae67c1e19d8d81ce4f133fbb SHA-256: b6bc864eec1db40f6aabc03abe7a88bc358eb308110db22af8ec00d2659013ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic indicating it links to a known malicious redirector, specifically disguised with the text 'Autism behavior checklist italiano pdf'. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=autism+behavior+checklist+italiano+pdf'. This suggests a phishing or social engineering attack aiming to redirect the user to malicious 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=autism+behavior+checklist+italiano+pdf In PDF document text
    • http://files.edinburghtabletennis.com/uploads/1/3/1/0/131070160/napuvunagasunok.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/1/0435/5879/7463/files/ruzumidamuduzodaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7688/6431/files/60789958265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/43232133039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/loxuzizonit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/43797202167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/official_sat_study_guide_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/77330216596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/apache_zookeeper_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/hukum_utilitarianisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/50264402077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/titopalagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/26099661029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5608/4630/files/vaved.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 6

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_off00007e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E70 5648 bytes
SHA-256: bee2747497b0df505b2c13b61809c40f11b10074cb40732ae7700e701ea66f57
font_01_sfnt_off00009176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9176 10356 bytes
SHA-256: fcb0bb9702da73d669e467f8342fb6e37381e801b6e17614272eb77d5f0bc997

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