Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb51b2de70ad4b47…

MALICIOUS

PDF

52.3 KB Created: 2020-08-21 10:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e842189c3635d3131b70333a50354237 SHA-1: abf060b0a2ebc58e8206037537d5339b57a97ea8 SHA-256: eb51b2de70ad4b476b73722b336d311b9b22a216ea9cfbbbcf5b342e9e955f28
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting PDF files. One prominent link, 'https://ttraff.cc/pify?keyword=vclip+apk+online', is flagged as a malicious redirector. The document body also contains this URL and a call-to-action phrase, suggesting a lure to download an application. The presence of multiple PDF links and a malicious redirector indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vclip+apk+online In PDF document text
    • http://tadod.diggaglassgallery.com/uploads/1/3/0/8/130813765/sawufexuzekerol.pdfIn PDF document text
    • http://files.dmdgo.com/uploads/1/3/1/6/131606861/106010.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/1/0432/1338/9992/files/86058787435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/46510729543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0035/6251/files/61997976913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/bell_crank_lever_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/kesobonir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/foniwotenifepufuxofekiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/legomitemabizawegepid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/57604551331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/dakufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/95454349714.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 2992 bytes
SHA-256: dc49bb006bd3228fb201c708f1ebade7bdb01378990da250d67b39d77b9a9193
font_01_sfnt_off00006999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6999 4680 bytes
SHA-256: a2fc1899ec54464411c6fa355d769cf85447b46592da4d05915519e46306d27d
font_02_sfnt_off00007993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7993 3892 bytes
SHA-256: faade0f089c6838b9bd5c9f090cea77c376559430c57049d7ce5ba420de91774
font_03_sfnt_off00008929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8929 10060 bytes
SHA-256: 1640c975756a2ec9018c4c1da33cad1e049238aed199da3ceb1aa831d45fc654
font_04_sfnt_off0000abe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABE2 16656 bytes
SHA-256: e923e76bf89b118ab362d26bc160801f6df3e0a9971dbff99d798902b4fceb4d