Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f608c6d90654e5e…

MALICIOUS

PDF

46.8 KB Created: 2020-07-29 21:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f143b69f7bfdba6f31d1e8fafbde67bc SHA-1: 496c75255b28ae93e8b5b6660f708bc1c5012f2c SHA-256: 1f608c6d90654e5e36eaa7f13bcc14820f6d3cb280375e2fb1a8946e68c61762
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to an 'annual report 2020 19 pdf'. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely the first step in a malicious chain.

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.com/pify?keyword=annual+report+2020+19+pdf In PDF document text
    • http://files.mfautodetail.com/uploads/1/3/2/6/132681308/60939b2.pdfIn PDF document text
    • http://files.sharinghopeministries.org/uploads/1/3/1/4/131453847/2590413.pdfIn PDF document text
    • http://files.mauriceshapero.com/uploads/1/3/2/6/132681201/jobov.pdfIn PDF document text
    • http://files.southviewcaravansite.com/uploads/1/3/0/9/130969332/jubosoxinojamizipino.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/1/0432/3137/9618/files/madefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/vuxezinibezolewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/37346532857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/56922949864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/digijixepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8733/files/32540867328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/nifitagufufusebowis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/15261137726.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 8

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_off00007a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A31 5164 bytes
SHA-256: f7bcf1f3da2bb7d0d872becd129afc43a42c436052200f35050f68a4e8e5fa63
font_01_sfnt_off00008bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCA 9880 bytes
SHA-256: 3ba596a1b80596de56e9d9214dad4d9aa2eb0608b17b966175c5b854bff42ce2

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