Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5dd50c3212cc3e…

MALICIOUS

PDF

51.3 KB Created: 2020-08-31 09:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60d93a17eaf23ecaca4bcf1578bd42a1 SHA-1: 524d155a7205ac5553672c4213898634071658e1 SHA-256: cb5dd50c3212cc3e1e1fc9715ee401a42cb7fe90d06a2acf5a5ccba5df41a105
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.club/wix?keyword=hotspot+shield+premium+apk+6.9.7'. This URL is likely used to deliver a malicious payload or phish for credentials. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, though one specific redirector is flagged as malicious. No scripts were extracted from this sample.

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.club/wix?keyword=hotspot+shield+premium+apk+6.9.7 In 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/1/0436/1119/3501/files/www_clickerproducts_com_instructions_klik2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/geruvasif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9852/2014/files/theme_powerpoint_free_2013.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/764aaa_589fb891c69248d08c12d2e30dff517f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ec0c41_ad5c44135d724656a7f05267090baf51.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/99afdc_0062deac0bef4c61ac4db969f2b3388c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b822286d2aa142f49455f67b8496307b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/45381673547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/gexelebek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/86538019012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/padibabumokusaduvok.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0bcf16_778db3e508184e9da370f233c8a664ee.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6c876b4e6dfa42109530a7bcebf56133.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/accd1f_b521f4dbda924ad58a26d35547163ca8.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAD 5644 bytes
SHA-256: 8c644d3037c38acc116e05cb2005aa3b1f17d4e2f27c35e04d8d666a696bdf07
font_01_sfnt_off00007eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB4 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00008742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8742 10228 bytes
SHA-256: de022efc1eb5bd62e3e84ff6d9e0f37985a15ecc1201cbd4bb6ac9f21d449aac
font_03_sfnt_off0000aa78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA78 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67