Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c78825441049f45…

MALICIOUS

PDF

44.5 KB Created: 2020-07-29 07:37:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78716cbbe248b459f245102c2d80695e SHA-1: b0a53dc2a274f2569526fd7d2f381266b9fd0d09 SHA-256: 8c78825441049f45c1eb80cf32a5e84cac35efab31e3c020767d2e80ec91afcf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=delegation+of+parental+authority+form', points to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to legal forms, likely to entice users to click the malicious links. The presence of a link farm and a malicious redirector strongly indicates a phishing or SEO poisoning attack.

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=delegation+of+parental+authority+form In PDF document text
    • http://files.deannaradaj.com/uploads/1/3/0/7/130775106/sirudazo_luneridofag_kubevasan_pijemuko.pdfIn PDF document text
    • http://files.updatescentral.com/uploads/1/3/1/3/131384018/fotimiva_nidanu_gibuvidedavade.pdfIn PDF document text
    • http://files.roseembyrs.com/uploads/1/3/1/3/131379456/vapujuj.pdfIn PDF document text
    • http://files.katrinaleelifecoaching.com/uploads/1/3/0/7/130776388/rupujulorevupetu.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/1/0432/5592/2856/files/reziviwejokebutemubewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/ziguzesedabikidunoxojas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/wadaloduporufinixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/49905816863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/rolefarerupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/movufejivipon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/35105862808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6380/3040/files/mopefonudezomolulava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/19645290344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/95003703780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/32442137314.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_off00007263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7263 5120 bytes
SHA-256: 2301d987c5bdd4cf8d6f9b046293ae93343ee122d722aa850ef99e757dc33439
font_01_sfnt_off000083b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B5 9660 bytes
SHA-256: 9c6660373a36d5cbbd4972d1b9af0b5bdb0c83fdf7f4f7c448392eb5b2741128

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