Malicious PDF — malware analysis report

Static analysis result for SHA-256 3568ecd9539232d0…

MALICIOUS

PDF

59.6 KB Created: 2020-08-24 13:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8490867a62c01d01d7421e2defe4068 SHA-1: 086c9fb31aea5c7d5f1d2ed7747de0cf374b4df5 SHA-256: 3568ecd9539232d007b95e0a1081efc03caf544119d0193bfbf493dc3804e090
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cuddle+buddy+application+form+blank'. The document body also contains this URL, suggesting a lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious.

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=cuddle+buddy+application+form+blank In PDF document text
    • http://files.sherrysroom.org/uploads/1/3/1/4/131453870/0b7dbd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6386/5497/files/d_h_a_ki_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9353/0526/files/dark_cloud_2_monica_weapon_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/pegubagusudeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/snake_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/kuranisuziwamotije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/install_ipa_on_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/7455487448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/dupumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4684/5854/files/depusizarimukaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5621/2642/files/ifa_exhibitor_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/82460898051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/38044030466.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.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 3260 bytes
SHA-256: 50c60118a87415fe0636e701c289483a9230d0b1b30e01c4f6b10e1ad3b7a26d
font_01_sfnt_off00006c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C21 5336 bytes
SHA-256: de2def360f54020bc833c058743310f781e4d896d5cf914c88c816f2d171cada
font_02_sfnt_off00007e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2B 2152 bytes
SHA-256: 4fe25ba7928097a7f10c49d48fbdfa3d67d5c298e0e27f2e336b771430a3570e
font_03_sfnt_off00008739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8739 5852 bytes
SHA-256: 0460e4b819836684ee646564f23d3767bfcf5407a742f126e14b557faf704447
font_04_sfnt_off000095f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F0 10376 bytes
SHA-256: d4e873b46bd519cf10dda29eca8d6e3f7eef0144e478f666fbee554e4a8a985a
font_05_sfnt_off0000b9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C3 16352 bytes
SHA-256: 9bff7ddbefd4d2bde9afc975cd75135cb90b8554def9bf2cbae7ababcc655485
font_06_sfnt_off0000cfc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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