Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda81511d487b138…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 12:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a065e3d8c78e9844541490ee6d7bc0ca SHA-1: 78216f17e8be09ebc4b3175859373d30220898a1 SHA-256: bda81511d487b1380e03e518d0f298d15e40f66c40a2f3795e5096e86f7ecc04
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.com). This indicates a social engineering attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=advantages+and+disadvantages+of+effective+communication+pdf In PDF document text
    • http://sudadif.fmmii.org/uploads/1/3/2/6/132681670/tazonexiloleg.pdfIn PDF document text
    • http://files.rintheyordle.com/uploads/1/3/1/4/131453267/6219362.pdfIn PDF document text
    • http://files.seatrunks.com/uploads/1/3/0/7/130775062/zorakanad_rovewep_fomepu_xoxilubarav.pdfIn PDF document text
    • http://files.eastsidewestsideswcd.org/uploads/1/3/1/8/131856271/8029f.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/1/0436/7309/2246/files/tekuzajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7119/2732/files/binedakujutulutixarifagav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/prise_en_charge_de_l_accouchement_dystocique_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/5039563111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/area_of_trapezoid_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/36613240683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4111/9647/files/christmas_cello_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/83551669910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/sideratajirumelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/56147840537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0753/1414/files/26843520212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/aboriginal_and_torres_strait_islander_social_and_emotional_wellbeing.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_off00006b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 5396 bytes
SHA-256: ce7ba1246cf5b9aaa3c6fe0aaff7845fe2dca86a3d903ef4cc2de997995b23e5
font_01_sfnt_off00007dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 10096 bytes
SHA-256: e3d61a7b7c9547610282fb20a2fc1a6b40b8517d3a9d0ce9c0ada57993045d78

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