Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d498483e34645a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-10 08:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3178a74738432919cd6b1e0b5e3df96b SHA-1: 66c61c3b881eb13708efd12751dbe2677df46b01 SHA-256: b2d498483e34645a80ee622c168244db6897e268f5d61720551b0a61ffc53fdc
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body includes a visual download lure, reinforcing the malicious intent. The primary malicious IOC is the redirector URL, which likely serves as the initial stage for delivering a payload.

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.com/pify?keyword=prepositions+of+place+exercises+pre+intermediate+pdf In PDF document text
    • http://luwox.broken-kingdom.com/uploads/1/3/2/6/132683014/pedum_jemube_fuvujemutar.pdfIn PDF document text
    • http://files.amyclevelandart.com/uploads/1/3/0/7/130775334/zafop-gevilotezoweleb-kikogokubok-tibaritiriwe.pdfIn PDF document text
    • http://wusol.tuxowner.com/uploads/1/3/2/6/132682883/add575c26e.pdfIn PDF document text
    • http://files.unconditionallovefoundation.org/uploads/1/3/1/3/131379820/4704392.pdfIn PDF document text
    • http://files.tracyoneill.net/uploads/1/3/0/7/130775304/lixarado-nugovod-tirufas.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/1/0437/2388/2664/files/xilogusuvonamigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/makalah_asphalt_mixing_plant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/geography_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/atlas_and_classification_of_electroencephalography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/hydrotherapy_exercises_for_cerebral_palsy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/50350676195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/ryobi_chop_saw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/33963391256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/suikoden_2_missable_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/pengertian_urbanisasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/probability_tree_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/nexoxufaref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/33849991539.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_off00007084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 5372 bytes
SHA-256: 086db4e19fb3403122b3469d4f9d4ecc388a8e7379ec054462c62d19bfbd75c9
font_01_sfnt_off000082b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B4 9896 bytes
SHA-256: bf6b78cd4e6d7940bf5faa69e873ccf3d2bbcb1fee602df275abc55561cab333