Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d821a0d8ba48e8…

MALICIOUS

PDF

37.7 KB Created: 2020-08-15 06:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69590b280f2c3de8678ac1490724a798 SHA-1: eb1cef7399fae4cc0079ce1a20eeb49867a2ea67 SHA-256: 57d821a0d8ba48e80a2afbb4e8201d791833ed7ef85ebe8d8526441dacf5f654
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=mapa%20de%20carreteras%20de%20castilla%20y%20leon%20pdf'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with 'https://cdn.shopify.com/s/files/1/0429/6241/9863/files/57931127461.pdf' being the first identified. The document body, though heavily corrupted, contains fragments of the URL and text related to maps, suggesting a lure to a malicious site.

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/wb?keyword=mapa%20de%20carreteras%20de%20castilla%20y%20leon%20pdf In PDF document text
    • http://files.scrministries.com/uploads/1/3/0/7/130775180/1876969.pdfIn PDF document text
    • http://files.thetaoofrudy.net/uploads/1/3/1/4/131438113/4288541.pdfIn PDF document text
    • http://files.middleclassmusings.com/uploads/1/3/1/4/131407552/7942486.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/1/0429/6241/9863/files/57931127461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/ab_negative_blood_type_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/73097653718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/tepafukojidaramawemariw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/anemia_makrositik_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/2374/7483/files/root_cause_failure_analysis_easa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9050/9973/files/311367107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/length_of_vector_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/45112223076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/zisipevabatujeruzomexevuj.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 4

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_off0000462a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x462A 5044 bytes
SHA-256: 05e53a324e13fd80a0a5c593c3a591b2a8a6c9601c2bcb024f5e2cc828e475a2
font_01_sfnt_off00005761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5761 11336 bytes
SHA-256: a49256ec77c3625a970da78c9460f9cfe7d9df4100c2024c7b136d5b31d62a67
font_02_sfnt_off00007bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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