Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6406e1a5225de9…

MALICIOUS

PDF

49.5 KB Created: 2020-08-20 18:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0486a26cde023496979fc3cfff0c3e8b SHA-1: eccddb0e2032e7566a673a1da6e40e9b73cbe4a1 SHA-256: 5a6406e1a5225de9801808664f765b0acdcf6560994cdf7365191a3ba48fbd1d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent URL pointing to a known malicious redirector. The document body, though partially garbled, includes the same redirector URL and references a 'guide', suggesting a lure to trick users into clicking the malicious link. 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.ru/pify?keyword=vanilla+wow+darnassus+reputation+guide In PDF document text
    • http://files.lasierrasoccer.org/uploads/1/3/2/6/132682040/vegujel.pdfIn PDF document text
    • http://files.marionnaz.net/uploads/1/3/1/6/131637553/pusikegigowele_wunusikimiw_lupupituxone.pdfIn PDF document text
    • http://files.hollygunn.com/uploads/1/3/1/4/131453695/jivifemivukur-zanuni.pdfIn PDF document text
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.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/1/0428/8145/0147/files/39328656389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4959/8632/files/87921020215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7963/files/wivawekazijuzaxifesaral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/sukonubajilewulileroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8682/9981/files/action_linking_and_helping_verbs_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/9549790391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/g_d_a_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/tojuzobupazifenexaviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/bozakovibimixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/full_sbs_3d_movies_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0528/files/texas_trailer_bill_of_sale.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B32 5064 bytes
SHA-256: bd40f18fd383174752477909db451fcb4c37d219eb7a1b95e2eba6e2cec49b3d
font_01_sfnt_off00007c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C86 15048 bytes
SHA-256: 823ab0276a6db16a7f81926b0ea9b5a130fad2c248dd3d24a37fde83eb6eda1a
font_02_sfnt_off0000ab04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB04 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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