Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c89451c68e34f2…

MALICIOUS

PDF

44.2 KB Created: 2020-08-21 22:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23503c76781e664dd8aefd1fc58bd52a SHA-1: b06cd8f0eccad301a338bbe444ca627c26b33a3d SHA-256: 24c89451c68e34f2eadec4c3b2f8a6358cfb5d2488d5b5a0213beaaf7e3568e1
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=vcenter+server+6.+7', which is designed to redirect the user to potentially harmful content. The document body, though heavily obfuscated, contains text related to 'Vcenter server 6. 7', likely serving as a lure. The ML classifier strongly flagged this PDF as malicious.

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=vcenter+server+6.+7 In PDF document text
    • http://files.charitysciencehealth.com/uploads/1/3/0/7/130739265/84330.pdfIn PDF document text
    • http://files.ststephenmartyrschool.org/uploads/1/3/2/6/132681517/roropifa-nadifixawaveva.pdfIn PDF document text
    • http://files.jaybirdsmoke.com/uploads/1/3/0/7/130739837/limatamisuberiv.pdfIn PDF document text
    • http://files.saltydogtactical.com/uploads/1/3/1/8/131871605/76734089d599633.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/1/0428/1021/2519/files/matog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74523611049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/wusiwekij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5108/8032/files/83172651078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/bible_study_topics_for_youth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5349/5958/files/atenas_que_ver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0964/files/adding_and_subtracting_vectors_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/domamusuvusuzexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6341/9547/files/arcore_apk_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/81682244479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/possessivartikel_im_dativ_bungen.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 3

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_off00006a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9C 4840 bytes
SHA-256: 4dbbf2672a85dfa712f980e8f15e560fea70ab8320204c9cff8c52e430c0aec5
font_01_sfnt_off00007b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B34 12716 bytes
SHA-256: 47aa40fd77c7c04eb9919601cf06e2a12a7c3013ee46038afc08d4afcac3c4dd

Open this report in the interactive analyzer, or submit your own file for analysis.