Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd3ac1158cfc5c8…

MALICIOUS

PDF

40.9 KB Created: 2020-08-24 09:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fe2e73f95af5b0352111b470d968087 SHA-1: 1c3227e4278f7f70065f7c77cc8ecd93f2bf9476 SHA-256: 6cd3ac1158cfc5c89bd313467a62706fe25129b1ec13a599c7c1ca3e18518083
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and an SEO link farm, suggesting a phishing or malware distribution attempt. The document body and embedded URLs point to a lure for downloading software, specifically mentioning 'spotify premium apk 2017 android'. The primary redirector URL is https://ttraff.com/pify?keyword=spotify+premium+apk+2017+android, which is used to obscure the final destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=spotify+premium+apk+2017+android In PDF document text
    • http://files.bodegamaya.com/uploads/1/3/1/6/131606165/1939988.pdfIn PDF document text
    • http://futamip.occidentallodge436.com/uploads/1/3/2/8/132814742/d992e8421a.pdfIn PDF document text
    • http://povusixu.uk.lollandfalsterairport.dk/uploads/1/3/1/0/131070722/vexugik.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/1/0436/5549/5833/files/56296570633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/66854556359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1532/files/1134603845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2525/0974/files/moxutitigalet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/gazelaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/delinadoxak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/gukoluwinusamepoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6415/6317/files/what_contemplate_mean_in_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/anticipatory_grief_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/pufevarade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/nifenadeko.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_off00006073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6073 5652 bytes
SHA-256: 35631780ea75a664a14b7d9e7b82d03814a282b6897308f1c86c5511b52e5e56
font_01_sfnt_off000073b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B3 10400 bytes
SHA-256: d9e77073494e1231b32cc114499e7a1f94c2c6db10efbfcb7fa1cbbbf1168713

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