Malicious PDF — malware analysis report

Static analysis result for SHA-256 e21eb3160710eb4f…

MALICIOUS

PDF

48.2 KB Created: 2020-08-02 11:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 283a9b5baedb7988ea88141e30861d62 SHA-1: 3e168ada44f7ef9cae707bf1e38d525677e40765 SHA-256: e21eb3160710eb4fbc249ca6462d43abb881befe7f4a8c62ea7e32fd12922bf2
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised as a search result for 'Ingersoll rand air compressor parts manual'. The ML classifier strongly indicates maliciousness. The document body is heavily obfuscated but contains the same redirect URL.

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=ingersoll+rand+air+compressor+parts+manual In PDF document text
    • http://files.wildfruitsofwellington.com/uploads/1/3/1/4/131406444/4371167.pdfIn PDF document text
    • http://files.dreampartiesnl.com/uploads/1/3/1/0/131070450/4345313.pdfIn PDF document text
    • http://files.sportbowl.com/uploads/1/3/0/7/130776735/piduxabu_vimix_fakapujison.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/lederovelojijumowisupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/bonikerilabegosipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/93717723994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1374/1471/files/vimexazaridurozedavadiboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/halle_berry_monsters_ball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/21055185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/zogema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/sapajizejixinuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/rulurolererovafawelojasuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/502626669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/malumivimadomawimumusuf.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E81 5212 bytes
SHA-256: 545a176de013a1d3bd9d171b81866fe95e5e0bc6d376360ff48654bd674206e9
font_01_sfnt_off00008020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8020 10896 bytes
SHA-256: 16ad40ed6827aedf2dd49871563ede77e84d7bacf7717a345aaf4252c37f8c63
font_02_sfnt_off0000a542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA542 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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