Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a35c41ce4c83811…

MALICIOUS

PDF

55.6 KB Created: 2020-08-19 00:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26251bda0fa7091633ddce4235393bea SHA-1: 80d3143b01f8dbb7d95ee58dffedb47bc8f109f6 SHA-256: 7a35c41ce4c83811c4d94e159904d294cc0591254db2b6a60af32d99ba3d9bf9
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for free Photoshop brushes, and a heuristic indicates the presence of a "download button" lure. The primary redirector URL is https://ttraff.cc/pify?keyword=free++brushes+for+photoshop+cc+2015, which likely leads to a malicious payload or phishing page.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=free++brushes+for+photoshop+cc+2015 In PDF document text
    • http://files.eastcincyogaschool.com/uploads/1/3/0/7/130738988/fanewidop.pdfIn PDF document text
    • http://files.beaute-totale.com/uploads/1/3/0/7/130776720/03063.pdfIn PDF document text
    • http://files.asttowing.com/uploads/1/3/1/4/131438379/lawin-rikixegowudi-kusunego.pdfIn PDF document text
    • http://files.thesourcemassage.com/uploads/1/3/1/4/131437657/2f759.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/1/0440/1014/3902/files/94901446023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/wubagufozomeripijene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/bulivutifubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4923/7145/files/judowesababun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/ganufixisusupomotopezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/40089086142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/8757906048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0925/1227/files/sasogorofunaxujugonete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/vetokazizopimipes.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C38 5404 bytes
SHA-256: 5c1eb3e7032dcea1f1c8979040f822a9c6480433e4c8f4558e8345c423f598ef
font_01_sfnt_off0000aeab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEAB 10148 bytes
SHA-256: 9cc9039b68ee1588eeb4dc9fd3eb4f90d0e8ecdc1fdf253324429a5424c8c515

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