Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f725a8dd97459b2…

MALICIOUS

PDF

50.3 KB Created: 2020-08-07 06:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a894ddf5e980f5296eb8843e6001024f SHA-1: e31273bfc4619352c21c41e1340d70d0d3d6fc9f SHA-256: 7f725a8dd97459b2bc0363b4c65c783960b4dc60f21be0b600b3934d9ba21bfb
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create a link farm, with one prominent link redirecting to malicious infrastructure. The document body, though heavily obfuscated, contains the lure text 'Aloe vera medicinal properties pdf' and the malicious redirector URL. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for containing a malicious redirector and a link farm.

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=aloe+vera+medicinal+properties+pdf In PDF document text
    • http://files.whitneyhorrocksfineart.com/uploads/1/3/0/7/130740193/dfd8c03.pdfIn PDF document text
    • http://files.litzmusic.com/uploads/1/3/1/3/131384286/gudapov_sajelulalarola.pdfIn PDF document text
    • http://files.medicalpapyrus.com/uploads/1/3/0/9/130969545/6119258.pdfIn PDF document text
    • http://files.ssmcommunitybaptistchurch.com/uploads/1/3/2/7/132712099/1333075.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/1/0431/4651/0504/files/26761954016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/guruxuxemuviwedujitepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/37581798120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/wugoxeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/votagogoxarap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/burorefubiwejugek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/11757677123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/9449704064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/ccna_1_chapter_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9956/8795/files/budefalaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/95447656280.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_off000084f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F0 5352 bytes
SHA-256: dfaf809e89db72b49c3c15b4e25d6dced435950233632256897e0aac2d87cf56
font_01_sfnt_off00009712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9712 10892 bytes
SHA-256: 4c9ae3d9d008e8c669647dd76cee4a2113bc9df68e21e824e48d422a93280a41

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