Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c52933cd33e0ee6…

MALICIOUS

PDF

49.8 KB Created: 2020-08-22 02:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab1c9dd5acde1560880cdd425cecc5b2 SHA-1: 5785852c3f74b583c0579bdf0117d23d58df1857 SHA-256: 7c52933cd33e0ee670b50b2f165af84fb7a2f8279f18252b7c1a83012f641f27
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service. The document body text, though partially corrupted, suggests it is impersonating a financial report to entice users to click the malicious link. The ML classifier strongly indicated maliciousness, and the presence of a known malicious redirector URL reinforces this assessment.

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=aitken+spence+plc+annual+report+2018 In PDF document text
    • http://wuxos.stclementscambridge.org/uploads/1/3/1/4/131453109/8218685.pdfIn PDF document text
    • http://fikagesiz.reportcard.mrslambsroom.com/uploads/1/3/0/7/130776791/1958281.pdfIn PDF document text
    • http://buduk.washi-art.net/uploads/1/3/0/7/130776106/9466592.pdfIn PDF document text
    • http://zujewuwi.laneanimalhosp.com/uploads/1/3/1/3/131398404/bejum-sadepinekiz-podetevuxasexud.pdfIn PDF document text
    • http://files.rosskay.com/uploads/1/3/1/4/131408581/pabamuwov-jukizax-texuxixigilim.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/1/0433/1274/2550/files/sojozinufotaxisapukabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/cookie_clicker_pantheon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/zukaxivesuwaded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/95492031191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/sozifuvejesasepepelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/81495597037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/risiruzurikazifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/90471727359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/bit_web_server_apk_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/dijavileporarijamuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/makatefolazijunosivi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C8 5500 bytes
SHA-256: 542fe7af0337cebf6cb720cacec8edbd3bf7f09a7b5da4e769fabd3c712662fc
font_01_sfnt_off0000978a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978A 10088 bytes
SHA-256: 64f293da2bcc680642c5f0c818e4922b64dc9234d3fbefc6608ec6bff1b3fe7c

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