Malicious PDF — malware analysis report

Static analysis result for SHA-256 db5557cb0b42a73c…

MALICIOUS

PDF

40.5 KB Created: 2020-08-10 03:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a339955afdde0969411b8ff93ab6041 SHA-1: 6909065a35e5a71c18a374a669b0e364844689c1 SHA-256: db5557cb0b42a73c54e2a2e5943e12068bb6d05ec38f12694baa4b9164bbcde1
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains numerous links to external PDFs, suggesting a link farm for SEO poisoning or traffic redirection. The presence of a 'Download' call-to-action further supports a malicious intent to lure users into clicking the deceptive link.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=annexure+a+self+declaration+for+labour+licence+maharashtra+pdf In PDF document text
    • http://folijes.hanoisweethome.com/uploads/1/3/0/7/130775403/1719096.pdfIn PDF document text
    • http://xorel.thepinayexplorer.com/uploads/1/3/2/7/132740930/7864071.pdfIn PDF document text
    • http://mekibu.superiorclinics.com/uploads/1/3/1/4/131437919/gifolet.pdfIn PDF document text
    • http://files.asmonzaracing.com/uploads/1/3/1/4/131408103/bba4ecd839e7c4.pdfIn PDF document text
    • http://files.corneliahoogland.com/uploads/1/3/2/7/132740264/9741885.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/1/0437/6608/7838/files/48059267867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/29369326769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/50455296366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/pixuwuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/bihar_si_previous_year_question_paper_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/4505050197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/causatives_get_have_and_make_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9243/4326/files/hindu_panchang_calendar_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/75849150096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4488/7963/files/22125436990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/19323487076.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 6

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_off0000603d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5592 bytes
SHA-256: 6483c467d370d8fd168bde65ecf1b739d63327515026e1141d37c5d0c87e911e
font_01_sfnt_off00007319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 9820 bytes
SHA-256: 9162e8809ebe1014512cc3ab34493a73746bdc0e9f65ae8d63306be1d5f52b11

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