Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff918db9acf47e1…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 14:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27448463328470e51cfda48f388cd2b6 SHA-1: 64bdc3599c9e3e23072ec748d5710d22669530a7 SHA-256: 4ff918db9acf47e1e4518338773b652ce8f1a96b5dd894bca0f61be2e2860569
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a news report, aiming to lure users to a malicious site. The ML classifier strongly indicates maliciousness. The document body, though partially corrupted, contains the URL and text suggesting a news report lure. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination.

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=news+report+today+about+weather In PDF document text
    • http://latuge.lawpenrose.com/uploads/1/3/0/9/130969060/99c6ec09a6e.pdfIn PDF document text
    • http://rokapa.downeynotarypublic.com/uploads/1/3/1/3/131380263/jurumedireja.pdfIn PDF document text
    • http://kiruwa.ljayhair.com/uploads/1/3/0/8/130814328/6019747.pdfIn PDF document text
    • http://tuzugeru.portstephensoutriggers.com/uploads/1/3/0/7/130739017/laxizik.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/1/0434/7851/5864/files/rajibatetudabusez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1363/1140/files/pisetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/ruketutanafenififodawiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/sx_de_alcoholismo_fetal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/sorazix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/nojogod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/dependent_personality_disorder_dsm_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/bingo_free_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6741/files/41772321462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/1320683491.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 2

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_off00006751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 5316 bytes
SHA-256: a516f5bac7730305b7800797347e8df21064318cfffff945ba9417a52a653ff9
font_01_sfnt_off0000796e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 10116 bytes
SHA-256: 403fa044ab4aad980de87de59638c29710c1d2a3262a444920bada0b86f85bd2

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