Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ed8fc86dcb7e2e…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 12:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fef99d419066a074259f94787a1d93a9 SHA-1: 831c14509691cb9667dcbd6984e402f7bf6c6273 SHA-256: 12ed8fc86dcb7e2e1181729f8384f57f8a57620467e62386dc83af36b0f56763
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text that mimic an 'adverse audit report sample philippines' to entice users. The primary malicious link, 'https://ttraff.ru/pify?keyword=adverse+audit+report+sample+philippines', is identified as a redirector to malicious infrastructure. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's designed to host a link farm for SEO-based phishing or malware distribution.

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=adverse+audit+report+sample+philippines In PDF document text
    • http://jatizu.josefjakobs.com/uploads/1/3/2/7/132740978/xukuvobirizoj_supitojepubu_nuliwozin_bisegodezevosiw.pdfIn PDF document text
    • http://files.newglobalimage.org/uploads/1/3/2/3/132303163/4008708.pdfIn PDF document text
    • http://buxek.sayyestothecake.com/uploads/1/3/1/0/131070355/bufopupuz.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/1/0433/0615/6190/files/88668812313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/radio_button_tkinter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2790/4165/files/sinus_lift_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1948/files/bobine_lectrique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/calcifying_odontogenic_cyst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4202/6150/files/gigaware_usb_to_serial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/oracle_java_jdk_8_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3359/0940/files/futefelalakijem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/92032975301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5079/4145/files/26929212921.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_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 5248 bytes
SHA-256: 2750e8ef015b986a0cf2db453fa0d025dfa9ec9c81ffa0857ce40a7e76b39891
font_01_sfnt_off000073c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C8 10120 bytes
SHA-256: 2e28a8338f1eaca490cf54aca01aadfe73fe38cb45a5e96aebb11a57d282511e

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