Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d58cd23c95d9bf…

MALICIOUS

PDF

34.8 KB Created: 2020-08-08 03:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce666d8d916a07a75252a1d4c895bb64 SHA-1: 56e4241fa53761199daf015f4512abdd4846bcc0 SHA-256: e4d58cd23c95d9bf49fe91696b39686cfd73367b9d96d77c0ba53e54d502413a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links designed to appear as a calendar, but the primary link redirects to a known malicious redirector. The document body, though partially corrupted, contains the string 'Telugu calendar 2020 pdf october' and a URL that aligns with the malicious redirector heuristic. The presence of numerous external PDF links suggests an attempt to create a link farm for SEO manipulation, likely as a lure for phishing or malware distribution.

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/pify?keyword=telugu+calendar+2020+pdf+october In PDF document text
    • http://files.jkacampsie.com.au/uploads/1/3/2/8/132815828/6607959.pdfIn PDF document text
    • http://files.magicbrushpottery.com/uploads/1/3/0/8/130874324/feroxaxitatimi-bavodaxuda-zigego-jotenijekeb.pdfIn PDF document text
    • http://xetiviwev.blackbutterflystudio.com/uploads/1/3/0/7/130740141/9643214.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/1/0439/6810/2558/files/guxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/75153175157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/sadopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/xuwutirogifuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/wemebefowasetida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/annotating_ipad_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/zagizogibapamok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/gifezosiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/hallelujah_guitar_sheet_music_free.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 1

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_off00004bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBA 5508 bytes
SHA-256: 5bb3a93773b74801f34c921e6f37fb5afde0fa1d16e05eeacd0b67a808a893c5
font_01_sfnt_off00005e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7C 9392 bytes
SHA-256: 3fb31e46c7946ac4381f532a01f8d073b52bd452340063aa06def89ee74173ba

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