Malicious PDF — malware analysis report

Static analysis result for SHA-256 680c331bb8a95a9a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 07:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f30922adc3a97edcfc2438bd3bcc0f49 SHA-1: 0caed3e5917ee03e285140b9a87733e6543d9dd9 SHA-256: 680c331bb8a95a9a809190125d79e259598bd43ce451e66d19849eff87fee3fe
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text related to 'Top 5 android phones 2018 philippines'. This indicates a phishing or scam attempt, likely using the document as a lure to drive traffic to malicious infrastructure. The PDF also contains a large number of links to other PDFs, suggesting it is part of an SEO link farm designed to improve search engine rankings for malicious 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.cc/pify?keyword=top+5+android+phones+2018+philippines In PDF document text
    • http://pejudikaf.bexwillis.co.uk/uploads/1/3/0/8/130874134/2940160.pdfIn PDF document text
    • http://files.varlodavenport.com/uploads/1/3/2/7/132740462/5755489.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/53727610631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/12840262371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/xitagiwelen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/78720647402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/84670121909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/jedatidusum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/34493044959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/afrikaner_broederbond.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/83437082474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/39368620286.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9E 5348 bytes
SHA-256: 63260f158ff00151b214f7d3e13f2c6bff351f46e22d12524ea0f1d24234d7d6
font_01_sfnt_off00006eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 10716 bytes
SHA-256: b54ba2aa133f12ad0c7363298c17f4c7768ade7b7a8aae94825abf01b93e30dc
font_02_sfnt_off00009358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9358 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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