Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe64deb9db1e02f…

MALICIOUS

PDF

47.6 KB Created: 2020-08-22 00:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7408012b89e18cccd21fdcbb35cbf1b5 SHA-1: 16fc9e7ea672478242f56d2165a2b1841928146c SHA-256: cbe64deb9db1e02f7cb818a5c581c27010590a8c1417ca62f965cfb221fc6674
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=avira+antivirus+pro+2019+apk`. This indicates the document's primary purpose is to trick the user into visiting this malicious URL. Additionally, a PDF link farm heuristic was triggered, suggesting the document is designed to host numerous external links, likely for SEO manipulation or to distribute further malicious content. The document body contains obfuscated text and the malicious URL, reinforcing the lure.

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=avira+antivirus+pro+2019+apk In PDF document text
    • http://files.cedarcreekarts.org/uploads/1/3/0/9/130969879/woduzuletotuleb-dipolomutoni.pdfIn PDF document text
    • http://files.honouringourbundles.com/uploads/1/3/0/7/130776646/e1f8cc.pdfIn PDF document text
    • http://files.nothingeasylifestyle.com/uploads/1/3/0/7/130739072/gadopakifegan-vatanafiju-rukenapulawili.pdfIn PDF document text
    • http://wuzuzep.changethedamnworld.com/uploads/1/3/0/9/130969926/vusafojexos.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/1/0433/0484/5465/files/appointment_letter_format_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/dapeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/29826209421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/jexezexapujewixel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0972/7912/files/24232949580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/vatican_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/58618437715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/dikutirajizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/balistica_forense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/wijifisarimuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/53610671588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/97648408033.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 6496 bytes
SHA-256: 18d902f52f4f53955862795735abed03dd9aaf3f0d7a57a8946ad40012f6128f
font_01_sfnt_off00007ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 5376 bytes
SHA-256: 6b803bad75dc79f6d0b88f213b058979ac090f90c92ef7413368138f4a0d5565
font_02_sfnt_off00008e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E02 10288 bytes
SHA-256: bdd5b75598ff90351f9dba348f0ceca668cd41216d8c9500863d7fa7a6b352b5