Malicious PDF — malware analysis report

Static analysis result for SHA-256 864462283c99d77b…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 22:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40703b70358b5f5d2b03c33c3e9b5a7c SHA-1: 04ed12ea46e4314bf6625d1d6d6550a5d79ad596 SHA-256: 864462283c99d77b8e263b1699cf1165a1074dcf6b14a4dbaa5d89024dc5f736
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including a primary redirector URL disguised as a lure to disable Avast popups. The heuristic firings indicate that the PDF is designed as a link farm, directing users to potentially malicious infrastructure. While no scripts were explicitly extracted, the presence of numerous external links, including a known malicious redirector, strongly suggests an attempt to lead the user to a phishing or malware distribution site.

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=avast+turn+off+popups In PDF document text
    • http://files.filmbandits.org/uploads/1/3/1/8/131856276/vawud_begenuzadere_sigizafawup_popowosowiride.pdfIn PDF document text
    • http://files.gsskids.org/uploads/1/3/0/8/130873973/korunavo.pdfIn PDF document text
    • http://files.vermontlearningsupport.org/uploads/1/3/1/8/131856288/nisozuziz.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/1/0430/3116/7137/files/3052942382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/74724875403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/16365436915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7606/6211/files/office_2007_configures_every_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2018/7805/files/61742812979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/80014626774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/basexuremobuwufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/viii_roman_numerals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/40767636468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/fundamentals_of_management_robbins_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/92945151615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/mexerujesekotegapujog.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_off000071a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A0 4912 bytes
SHA-256: 7c55fb96eda853f2a9e0a4485b8f6cba3185142961918f46cb78faac19d289d5
font_01_sfnt_off0000826e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 10128 bytes
SHA-256: 0b1696eabc38460ae6c1db3a2588dc3a7d166fedbd9782bd31eecd3b1aa7f1de

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