Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a52f4a1f1f0075…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 22:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f47c2bd435ef1d677e4ae179c42c9ee SHA-1: 50b6ddba56732e139e7b777deee88b4293d716a0 SHA-256: 40a52f4a1f1f00751c389bb3ae75e738d6ab5826c1eabbf253270d05814c1749
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fire+alarm+detector+types+pdf'. This indicates a phishing attempt where the document body text, though partially corrupted, likely serves as a lure. The file also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the redirector, which likely leads to a further malicious destination.

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.cc/pify?keyword=fire+alarm+detector+types+pdf In PDF document text
    • http://files.calgarycigars.com/uploads/1/3/0/9/130969509/zazovovuso.pdfIn PDF document text
    • http://jemuwa.alessandrabaccilliere.com/uploads/1/3/2/6/132695569/5382702.pdfIn PDF document text
    • http://moraroke.mommapicecream.com/uploads/1/3/1/0/131071041/213864.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/1/0434/2317/0710/files/install_wine_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/danedujibokakof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/guzipizoleni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/neopets_user_lookups.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/29677904116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/uce_chemistry_past_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9290/2037/files/16819210625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/69118776331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/80364452484.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 1

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_off00005e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 5360 bytes
SHA-256: 5d6e91aeeb74242bf65718f838fa3b5266c818da935856c03c8157ed21776020
font_01_sfnt_off0000704b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 10272 bytes
SHA-256: a68dd528fc46767f892aa28f10f26a3a659e14f9d2e77cb26d5468629560e8d5

Open this report in the interactive analyzer, or submit your own file for analysis.