Malicious PDF — malware analysis report

Static analysis result for SHA-256 53363210abd02292…

MALICIOUS

PDF

39.0 KB Created: 2020-08-22 05:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e63d48068265bdd47a4fda56c80d87c SHA-1: f2b277b705191b30ef9ad50a37a0f18d50614e09 SHA-256: 53363210abd0229257de26a30f28ed9688258b52b642df12583d7a94720a5d33
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'Hays legal salary guide 2019' which, upon inspection, redirects to a malicious URL. This indicates a phishing or social engineering attack aiming to lure users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded malicious link is the primary indicator of compromise.

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=hays+legal+salary+guide+2019 In PDF document text
    • http://roxizal.forevershizuka.com/uploads/1/3/1/4/131453293/976840.pdfIn PDF document text
    • http://files.sarahobrienhart.com/uploads/1/3/1/8/131871535/bilarepizadol-kulisomomerim-norax-tunam.pdfIn PDF document text
    • http://files.techsun-breakrooms.com/uploads/1/3/1/3/131379622/b84ae.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/1/0432/9131/2288/files/bisit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/benim_hocam_trke_konu_anlatm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/apc_back_ups_es_750_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7170/0120/files/xufiwuxijegev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/bunnings_fibre_cement_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9872/4769/files/95667880011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/efek_samping_bleaching_gigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/f150_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4657/files/power_amplifier_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1557/8279/files/50209599428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/muriwopopebetilavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8100/6244/files/wesafarukuwetiludujiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4040/files/precalculus_functions_and_graphs_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/xosifutosupiniw.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_off000058bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58BB 5536 bytes
SHA-256: 263761bbb63fe9fd03d5f4e06358e98536a4145058b89f89c86aa6d87e3509f4
font_01_sfnt_off00006b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 10384 bytes
SHA-256: c8e5a73c804a427911cd28f5c73cc4b090818387b2763d9458e9a328d4b5fa96

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