Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf566ddedc307830…

MALICIOUS

PDF

52.5 KB Created: 2020-08-04 15:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe81de6c8ddc01826d7854386cd815c6 SHA-1: b75e863a536cda7f0adf4490631f4e425c7f0072 SHA-256: cf566ddedc307830a6b431f16bd73d50d53f299443c186818e6f6feda96f0324
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=assamese+calendar+2020+pdf+download', suggesting a lure to download a calendar PDF. This redirector is likely used to funnel victims to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=assamese+calendar+2020+pdf+download In PDF document text
    • http://files.digbystories.com/uploads/1/3/2/3/132303117/52d4b34c0ec06.pdfIn PDF document text
    • http://zoripe.thegatheringgarden.com/uploads/1/3/0/7/130776483/rerawakoz_misitidev.pdfIn PDF document text
    • http://files.mastlestattoo.com/uploads/1/3/2/6/132683137/mivides-disodofelofifa.pdfIn PDF document text
    • http://tivav.joyandjoebaby.com/uploads/1/3/1/8/131858661/1103627.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/zonibotumave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/68446978886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5588/8022/files/cd_risc_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/mujojomelofojigof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/19978353028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/11031394628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/gekovirosukujol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/zosuzule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/ffdshow_raw_video_filter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/rise_of_the_witch_king.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2995/2674/files/mobudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/motikanividox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/fimejiposokikonejom.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D0 5316 bytes
SHA-256: 5dbb9c7cf8be761de313fa79f2500a98fcc7af04a7186c62fb7980079e4f66d1
font_01_sfnt_off000067c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C4 6940 bytes
SHA-256: e5e9ec92fad838124d3f585bc4a0df1f540574de48f5bef367c355311243a1e1
font_02_sfnt_off00007ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 9980 bytes
SHA-256: 8ce6c10acdeb61c5182d567bbd54f0221372ee2133e7ef3157cd6c4ba718c188
font_03_sfnt_off0000a10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA10A 16068 bytes
SHA-256: 9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6
font_04_sfnt_off0000b5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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