Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7cba78dd0f748f…

MALICIOUS

PDF

50.6 KB Created: 2020-08-06 19:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2691955a1f4e63542edb2e5c44803f5 SHA-1: 38fe78f05a67d7f678975c83d2c012f902b2910a SHA-256: ee7cba78dd0f748f306c9861113738c011194ae415365e2fcc50abc9de34ddc5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, also contains URLs that appear to be part of an SEO link farm designed to lure users. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution attempt.

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=cedulas+do+brasil+1833+a+2020+pdf In PDF document text
    • http://files.reyal.co.uk/uploads/1/3/2/6/132695384/kajijirelinu_pebunuv.pdfIn PDF document text
    • http://files.ohioscl.org/uploads/1/3/0/8/130873771/jiwulabukitetijimigu.pdfIn PDF document text
    • http://files.placercountyreviewagency.com/uploads/1/3/2/6/132695200/3022409.pdfIn PDF document text
    • http://rapuki.ausmazehanatkhan.com/uploads/1/3/1/6/131606407/bevibasojukamom.pdfIn PDF document text
    • http://files.goldenpandarestaurant.com/uploads/1/3/1/0/131070030/deteduwiwagoxize.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/1/0437/5969/8077/files/gabigurawomowusilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6857/8210/files/7078748309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/steam_download_stuck_on_stopping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8301/4048/files/71133869012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/82078499169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8073/5138/files/ave_maria_gounod_soprano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/97296892881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/2686353457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/cambridge_essential_english_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/pikufuzafefubozin.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 7

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_off00006bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC8 5580 bytes
SHA-256: 37a688375b4c69a29a0ad1f873b20f16a166ae2df03697cb2499a00e592ac7fc
font_01_sfnt_off00007ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECB 15048 bytes
SHA-256: 4844fb92ac07c94235f9ac3f469dedd96bfdac01e03d5943576934fc307c4d3d
font_02_sfnt_off0000acf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACF9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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