Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f0995ebb0f3aefc…

MALICIOUS

PDF

50.1 KB Created: 2020-08-11 23:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5095f9c7650df2bb1da6905914eb503b SHA-1: 8d2eca27a2cb508fabb03bef5fe541c4312187a4 SHA-256: 1f0995ebb0f3aefc291579400550c9975b13bb9c89449925e2d0de45810340c5
194 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 benign Shopify URLs but one critical link redirecting to a known malicious domain. The document body text, though garbled, contains the URL that is also present in the PDF's link annotation, suggesting the user is intended to click this link. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=electrical+engineering+mcqs+by+m+handa+pdf+free+download In PDF document text
    • http://files.janezellmusic.com/uploads/1/3/1/4/131483275/lirejibivifoz.pdfIn PDF document text
    • http://files.caitlindemeyere.ca/uploads/1/3/0/8/130874612/df4d54550cb3.pdfIn PDF document text
    • http://marutopa.myviewpointon.org/uploads/1/3/1/3/131382406/xemikebel_zafiwezel_jibovixafu_xadaxiref.pdfIn PDF document text
    • http://pujug.blackfoxllc.com/uploads/1/3/2/3/132303189/jipigavozibojumomez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/tigezemudevujinokit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/89034026116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/77041819644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8427/4069/files/58371266381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6823/3630/files/71716445440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/56340933769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5827/8050/files/biochemistry_study_guide_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/anti_monopoly_law_china.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6255/7856/files/24532952726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/fowediwipowir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/celi_3_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/point_biserial_correlation.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000629d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 5772 bytes
SHA-256: 6b1d06e59f236d35d553dc37fdf383c5351f36d65efe4d6250d5b39d31f06258
font_01_sfnt_off00007605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off00007fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD1 14152 bytes
SHA-256: 6ed44261bd9143721b8e29ce364b5f65303a8769b6087462790b44d9cb917733
font_03_sfnt_off0000abd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABD3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34