Malicious PDF — malware analysis report

Static analysis result for SHA-256 134a4d61453f1af3…

MALICIOUS

PDF

32.7 KB Created: 2020-08-19 12:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65dec625b5953f51f98668f2f0d58ddc SHA-1: f23bf63cd8ab6187026f319e065a38f73c439a01 SHA-256: 134a4d61453f1af31687e2efc4fa4fb9880266f3b306b87f090ec397cca969a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector, disguised as a lure for "live sports hd tv streaming apk". This redirector then points to a PDF hosted on Shopify. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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=live+sports+hd+tv+streaming+apk In PDF document text
    • http://files.curlydoodles.com/uploads/1/3/0/7/130775231/0d66835.pdfIn PDF document text
    • http://zipaxika.villasundream.com/uploads/1/3/0/8/130814297/87cbd018301e8.pdfIn PDF document text
    • http://files.jeanhamusic.com/uploads/1/3/0/7/130775221/devepupobip.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/1/0430/4008/0021/files/9586626653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/rutabezegori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/suero_antiofidico_dosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/kanunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/vakisitomewemapujerofemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/87933194532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/73762374106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/35395489282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/the_motley_fool_investment_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3599/5808/files/asa_style_guide_5th_edition.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 3

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_off00004331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4331 5408 bytes
SHA-256: a1c8b47efd584ff2f2b6f78bd30ee0cb6698bc28cfaf7ba391bf62755b733d91
font_01_sfnt_off0000557c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x557C 9640 bytes
SHA-256: 591b8bb2e25e650b7292c184364c3c7d985a437814d89059ce4dae739f5ff083

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