Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4cbc07c8c7527d…

MALICIOUS

PDF

40.1 KB Created: 2020-08-21 02:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 637c83fad179e72cb015e203ecfc6882 SHA-1: becbdb216af10edbdc0555a54589d63cd21f04e7 SHA-256: ce4cbc07c8c7527d07ca16fca5beab3ba4b911c4289f6b7933fdab5874b8b582
234 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search results or distribute further malicious content. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/pify?keyword=aov+guide+violet In PDF document text
    • http://totogaza.itsmalibee.com/uploads/1/3/0/9/130969868/1234949.pdfIn PDF document text
    • http://rajeza.liveactionguideservice.com/uploads/1/3/2/7/132712324/9005384.pdfIn PDF document text
    • http://files.arizonastatecornholechampionships.com/uploads/1/3/0/7/130774970/5214736.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/1/0440/5297/1685/files/riviwilowan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/wezasarakitonemij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/71062437070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/20735057648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6038/8262/files/31770815764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8078/1719/files/cabinet_ministers_of_haryana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/87906048562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/81525122020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/calvin_klein_performance_detachable_hooded_jacket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/41898291825.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 2

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_off00005ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 4560 bytes
SHA-256: 40560aab36384bf70e37d976d99e69e1b4aea301c1191d02a4977a919026fdb4
font_01_sfnt_off00006e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5D 10640 bytes
SHA-256: 4ad29530069be76448d61f27efa475c513cff3a6250b1ca281fc99e920d8d2f0

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