Malicious PDF — malware analysis report

Static analysis result for SHA-256 93bbdd53d20be4ab…

MALICIOUS

PDF

41.1 KB Created: 2020-08-26 21:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50d68ef72480f93d355deb9e61d8ca4f SHA-1: e919bc16c72f6eb3deaaed5e79131055717ddab6 SHA-256: 93bbdd53d20be4abfe8ed019528aa14f43f5080097af6c558747b62d8389c393
234 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.com/pify?keyword=acer+aspire+one+kav60+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the Acer Aspire One laptop manual, suggesting a lure to trick users into clicking the malicious link.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=acer+aspire+one+kav60+manual In PDF document text
    • http://files.pierreartista.com/uploads/1/3/0/9/130969986/zonod.pdfIn PDF document text
    • http://files.gappify.com/uploads/1/3/1/4/131437330/jekajulas-kidezur.pdfIn PDF document text
    • http://jepesu.saaea.org/uploads/1/3/0/8/130814935/naroda-gizoteko-garobej-gebefaduwojo.pdfIn PDF document text
    • http://zetuw.outlawactionsports.com/uploads/1/3/1/3/131398560/d82ff40563ab.pdfIn PDF document text
    • http://jisoni.serbianheritageacademyofcanada.ca/uploads/1/3/1/4/131453247/nobetisulim-turibomaxadef-bawapatof.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/1/0436/4143/8366/files/2569337279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/46419344500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9621/files/neversinks_tornado_shot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/remolaweder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7587/files/9487941803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/zezuxatafetusiwuzuzama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/free_movies_websites_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0464/8859/files/wondershare_data_recovery_software_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/maternity_leave_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/549906331.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_off00005be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE0 5488 bytes
SHA-256: b6ac10533cb4e12fd7649efc0f837813f5103bfa78eb7d6140dc6d4a431d6102
font_01_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 12036 bytes
SHA-256: 8d793908c7be7b766959161ebb7f96f6dafb5252d54c9dced8c79bc90fdc51b9