Malicious PDF — malware analysis report

Static analysis result for SHA-256 db240042be365081…

MALICIOUS

PDF

47.1 KB Created: 2020-08-09 15:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3ee2ece1bd5ff3b154b566bb92cb764 SHA-1: d75c895d2c8653a7a51688c19d301e082f810f10 SHA-256: db240042be36508129ea17cac34f02726807a97f849c8dcf8cd93d43bae214ed
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Plantronics backbeat pro 2 manual pdf'. The heuristic firings indicate the PDF links to malicious redirector infrastructure and functions as a link farm. The presence of a callback phishing lure suggests a social engineering attempt to engage the user further.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=plantronics+backbeat+pro+2+manual+pdf In PDF document text
    • http://files.coronadohighschoolorchestra.com/uploads/1/3/1/8/131856124/semomitelo-wapugowake-lezim.pdfIn PDF document text
    • http://files.durhamsciencefair.ca/uploads/1/3/0/7/130739684/zatadizula.pdfIn PDF document text
    • http://banosabuz.nicolenaro.org/uploads/1/3/2/8/132814930/8627702.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/1/0432/8099/0366/files/sazotasogokexejiguvov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/alt_codes_star.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/55068169854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/elements_of_statistical_learning_stanford.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/zoporuzikimives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/namikubobebezakuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/rafuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/voltage_stabilizer_price_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/base64_encoded_file_php.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/juxabagegonuxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/38368756502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/stryker_endoscopy_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/dobajojizunijiwutako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/tiwokepurupusumir.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B67 5640 bytes
SHA-256: 379e761ae25d5d8a2ed7289de2d5faed4c102ae2816e0a7402757822da19130e
font_01_sfnt_off00007e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7B 15856 bytes
SHA-256: 1be70aa966880cd3b5d5bad6487026c6f21d46918aa9d9fe32e7c63118fd05a2