Malicious PDF — malware analysis report

Static analysis result for SHA-256 72168865793d43ea…

MALICIOUS

PDF

34.0 KB Created: 2020-08-15 02:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7519ff325fb88118ae2110ca9aead61b SHA-1: 4b3649497c89503e9305bb1a819e3991e49c4719 SHA-256: 72168865793d43ea9f13601c3b15df5a8486428fb1f88a900f1d643788df97aa
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though corrupted, contains text suggesting a lure for "cute baby funny images" which redirects to a link farm. The primary malicious IOC is the redirector URL, which is used to funnel victims to potentially harmful content.

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=cute+baby+funny+images In PDF document text
    • http://files.florencetrackclub.com/uploads/1/3/0/8/130814340/08a821e62e79b.pdfIn PDF document text
    • http://files.barriointellect.com/uploads/1/3/2/7/132740321/104c7d.pdfIn PDF document text
    • http://files.quiltsbyj.com/uploads/1/3/1/6/131636916/gapas_nimosakiwekejur_dabomafesam.pdfIn PDF document text
    • http://files.vintagewoodworkingtools.net/uploads/1/3/0/7/130739204/8115170.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/1/0429/4891/9450/files/xogidaxaxogipinule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/kajadisetolifom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/domiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/10171677533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/50480920819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/opposite_words_in_english_for_class_1_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/bazubimiwenovodevafawusif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/52746494767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/panchang_calendar_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/express_vpn_ip.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_off000049df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49DF 5108 bytes
SHA-256: 91c8805227be3cebc3d3f0f1f9d1ce940b1623ac60b8d3b3b1eb5a4bbd2edab3
font_01_sfnt_off00005b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B41 9484 bytes
SHA-256: c7bea70bb5b7564f227d87dd2429092273143fbfb9a3758ca1c0cf35950e42a9

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