Malicious PDF — malware analysis report

Static analysis result for SHA-256 788cd7e641ec2583…

MALICIOUS

PDF

151.0 KB Created: 2020-08-18 20:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5501221bbd25021a6ac27cb81c024bc1 SHA-1: bf27443ef33668c18c7c3aa89851bb60b8678eec SHA-256: 788cd7e641ec2583cf018a5e95fee7d11498ee8d718058c61977580cbfdbc15c
134 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it links to known malicious redirector infrastructure, disguised as a free legal dictionary download. The ML classifier also flagged this PDF with high confidence. The embedded URL, 'https://ttraff.cc/pify?keyword=legal+dictionary+free++pdf', is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=legal+dictionary+free++pdf In PDF document text
    • http://files.manduraharmysurplus.com.au/uploads/1/3/2/7/132712222/lozomumenojiva.pdfIn PDF document text
    • http://pufatape.thebeerfrontier.org/uploads/1/3/2/7/132710776/1012734.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/1/0449/6785/4248/files/preschool_art_curriculum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/camp_hill_prison_visiting_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/al_quran_juz_23.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/gta_vice_city_cracked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/the_bloody_chamber_angela_carter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7975/2087/files/acellus_answer_key_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/3799246111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4044/files/10727360848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/69306709488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/mental_health_illness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3556/5990/files/jaxama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/2669081408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8048/2970/files/42895740196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/11961685404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/energia_eolica_unam.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 1

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_off00020a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A41 4976 bytes
SHA-256: 7513af0d2369a3eee2b71ae2a1ee229bb41a7a8b45bb957981d07eaddf186476
font_01_sfnt_off00021b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21B40 10816 bytes
SHA-256: 768362f31fa437e5db98cb5ebf22893a8a75cda0b967cdf59ff490f2e5a44109
font_02_sfnt_off00023ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23FFB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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