Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb90155a6d2e804…

MALICIOUS

PDF

59.5 KB Created: 2020-08-14 14:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5457b21801234f0afad99b349b9164de SHA-1: 1f903edac301b2c113f4f289bf9cb3c1d2169d58 SHA-256: 1cb90155a6d2e8046b3778f7e53db7cf919a52ea85b827cf7e7ef048d2da8da0
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, and one critical link to a known malicious redirector at 'ttraff.cc'. The document body contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The primary intent appears to be redirecting users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=admob+native+ads+recyclerview+android In PDF document text
    • http://files.mickeydloughy.com/uploads/1/3/1/0/131070581/468d1dd5c.pdfIn PDF document text
    • http://files.awakenteenleadership.net/uploads/1/3/2/7/132712006/833b28f6861.pdfIn PDF document text
    • http://files.stuartmcdonaldmp.co.uk/uploads/1/3/0/7/130775245/davedoxomex-lomitiwuledubu-gesufexivejax.pdfIn PDF document text
    • http://files.cordescottage.com/uploads/1/3/0/7/130739631/dac46e390b5.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/1/0428/7424/1187/files/penubidajixamikizepufan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/kundalini_yoga_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/nurugijubejale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/66570609127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/kivulaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/jepapuzovikinegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/los_dioses_en_los_cdices_mexicanos_del_grupo_borgia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/badijeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/compelling_wealth_management_conversations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/kufad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/admin_roles_and_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9829/files/home_automation_using_arduino_and_bluetooth_code.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A8 5468 bytes
SHA-256: 1cbe750960e82cdadac6476f19e6fb4c9b7715431ce6bbc5ef8e8234765c48a3
font_01_sfnt_off0000b43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB43D 13912 bytes
SHA-256: 9e0a47fb5cc09b39c29fd184bc49fab747abbb8fbc6b26dd1de9260923270ce2