Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fcb33b69a99d577…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 19:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4533eb7dff745e146f2d688b73400e8d SHA-1: 89a0ab31227a77f01a19d3a04408c51a0547bee0 SHA-256: 5fcb33b69a99d577e57e648bcd98c9d49aa5b6818078f130d11bad85f635a39f
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector at 'https://ttraff.ru/pify?keyword=broadside+array+and+endfire+array+pdf', indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm it links to known malicious redirector infrastructure. No scripts were extracted, but the document body and embedded links suggest a social engineering lure to drive traffic to malicious sites.

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.ru/pify?keyword=broadside+array+and+endfire+array+pdf In PDF document text
    • http://files.celebelle.com/uploads/1/3/2/7/132712006/6270561.pdfIn PDF document text
    • http://files.clairedaviselite.com/uploads/1/3/1/6/131637136/b72c8.pdfIn PDF document text
    • http://ketajo.adventmoravianbethlehem.org/uploads/1/3/1/4/131407469/2565387.pdfIn PDF document text
    • http://files.clcpeople.net/uploads/1/3/2/6/132696598/lorizarit.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/1/0431/9969/2958/files/45476016863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1966/5561/files/20277695058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/magorugapumijonadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/57071130606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/zofran_davis_drug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/fade_with_braids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/gmail_delete_old_emails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/72236005034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/55240406970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/tagufepokoruneni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/18962675064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/47300487140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipudakafadaned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0577/9878/files/wafiparugodivalawetuz.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_off00006e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3F 5152 bytes
SHA-256: 6f1add7f3b756d4573e0e020e2181da75b774378fd8f50f8052611460eadb704
font_01_sfnt_off00007fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE1 10084 bytes
SHA-256: bf3a1a950939b3503a8927edae332de65e4e0488fe55c05ef99b427ebfd7ae44