Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fbdab556482366…

MALICIOUS

PDF

46.0 KB Created: 2020-08-15 01:40:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 992526da452bbf6587cc456adaf8c693 SHA-1: f54a91e06dbaf618c58c2223912a42576894c372 SHA-256: 65fbdab55648236653da4d06da970afd5f1ef1e40f753af1630806c944829f60
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service identified as malicious. The document body, though obfuscated, includes text suggesting it is a 'certification guide', a common lure for phishing or malware distribution. The presence of a malicious redirector and a link farm indicates an attempt to drive traffic to potentially harmful sites.

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.ru/pify?keyword=ccda+200-+310+official+certification+guide In PDF document text
    • http://files.azkillerbeessoftball.com/uploads/1/3/0/8/130874518/jemizip.pdfIn PDF document text
    • http://files.mabemi.net/uploads/1/3/0/7/130776592/167aba47776651f.pdfIn PDF document text
    • http://gisupum.elginartsassociation.com/uploads/1/3/1/6/131606490/8066076.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/1/0430/9919/3501/files/49007208913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/linux_nvidia_driver_install.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/fetusekafukana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/42384043244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/nbme_step_2_ck_form_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/cambridge_checkpoint_math_book_1_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/5751612791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/46006984935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/47024126332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/56798606457.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 8

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_off000069b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B9 5436 bytes
SHA-256: 0f8c0597911c2dbb019cc75e8051a54ce88e67ff362f87a412cf934c8357de9d
font_01_sfnt_off00007c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 14996 bytes
SHA-256: 2b16ee2cd2b231986da8c1d6765a025c22880b9f61d3fc0440d8fc9fa53cbe97

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