Malicious PDF — malware analysis report

Static analysis result for SHA-256 af169d616e45b765…

MALICIOUS

PDF

69.0 KB Created: 2020-08-05 03:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfd02ba167e1ef6972280aaf1151e029 SHA-1: df2f87b6d163da7b936393dc2ffa425ab146f685 SHA-256: af169d616e45b765ab00153330fc502bfd3146b97ddf98453e5a79d09735290d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that is disguised as a download button. This link, 'https://ttraff.cc/pify?keyword=important+days+list+pdf+download', leads to known malicious infrastructure. The document also contains a large number of links to PDFs hosted on Shopify, likely as part of an SEO link farm to improve search engine ranking for malicious content. The presence of a visual download button further supports the lure.

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=important+days+list+pdf+download In PDF document text
    • http://files.machinerysolutionsgroup.com/uploads/1/3/1/3/131379382/e2428bd25a36d.pdfIn PDF document text
    • http://files.hanmaumchurchdfw.com/uploads/1/3/2/7/132712006/dajufetikolejodoboje.pdfIn PDF document text
    • http://files.katemasley.com/uploads/1/3/1/1/131163615/turamomapivoker.pdfIn PDF document text
    • http://pilajemow.mk-meats.com/uploads/1/3/1/4/131437246/1b8f5b42e06.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/1/0429/2742/3654/files/45121248709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/37472025381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/college_algebra_gustafson_11th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/5059499969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/fupujaxovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8615/files/20088834214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/advertising_agency_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/kugamovuxafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/xuritakirixufutumoxanep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8574/9654/files/pibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5495/4656/files/student_council_president_speech.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/88952565055.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_off0000d1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C2 5320 bytes
SHA-256: 29c6f6ffa434c395879bf6b281ffee7cf29d64cb5a1c8614ad8f38d7048c0bf8
font_01_sfnt_off0000e3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 10184 bytes
SHA-256: e5e371513d3c10bc02eae6410d6773a5df67ce311e9fccce992abb966646aa2d