Malicious PDF — malware analysis report

Static analysis result for SHA-256 227724f6dd013588…

MALICIOUS

PDF

40.9 KB Created: 2020-08-15 02:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0b8b9799db10612abc3930b41698921 SHA-1: 81fbe419f159b86c061dc27a9fd9ee62cf590e74 SHA-256: 227724f6dd013588ddce87de0c39b4a38b603ded2f2407387881fc3d54503c23
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a high number of embedded links, many pointing to external resources, which is characteristic of a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, traff.cc, which is used to obscure the final destination. The document body also contains a call-to-action phrase, reinforcing the lure to click the malicious link. No scripts were extracted from this sample.

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=convert+kindle+to+pdf+mac+online In PDF document text
    • http://romuvebo.holdengreenphotography.com/uploads/1/3/1/4/131453870/65411.pdfIn PDF document text
    • http://kanilom.chappellhillgardenclub.com/uploads/1/3/0/8/130874493/kumiwot.pdfIn PDF document text
    • http://sewivavas.maison-lamartine.com/uploads/1/3/2/7/132712380/3c3ca4c4ff4c1.pdfIn PDF document text
    • http://files.southcanterburytoday.com/uploads/1/3/0/7/130776619/zomobeseti_lajoloxeka.pdfIn PDF document text
    • http://files.shopplumgifts.com/uploads/1/3/2/8/132814343/zamifagebevigaleg.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/1/0435/7819/6129/files/bukekakejapone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/mujelivonuvumavevot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90142435821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/lelorosofumizine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/soforexatitelan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2212/2151/files/nolewagedevarope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/79096785723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1291/4332/files/santa_elf_bowling_game_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/wing_chun_techniques.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_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5152 bytes
SHA-256: d13adce64d10474a5fbf15bb49c44063e75621bfe615c7cf9a7bc98662a0c4c4
font_01_sfnt_off00007256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7256 10592 bytes
SHA-256: fc45e54c6fc0f558ced4010c4a8cc6be880b5f07aefb7d95fbc39914c8bb0e31