Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c11d576b634660…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 19:32:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4da22ba1af71c615ce1b08e2662ab9b SHA-1: 6232f31d843e930007a46f7d53126a5d68e7cf18 SHA-256: e3c11d576b6346605bd37cee508e302f972bc50c4d1998ac01c47d57bd9b7684
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link: Malicious File

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or redirection attempt. The document body text, though partially corrupted, includes the malicious URL and a lure related to blocking Facebook on Android. The ML classifier also flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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=block+facebook+on+chrome+android In PDF document text
    • http://gejuduwug.michelleconsidine.com/uploads/1/3/1/6/131606186/jefubusofise.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/1/0429/8568/5153/files/mavorokur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/gajagodaguvewemano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/real_mathematical_analysis_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/tetimedesedamigep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/copper_flotation_process_flowsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/18773445783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/xijuparodonexujoluwemuvik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5026/6787/files/aeroelasticity_flutter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/basoxefejupifepugefolim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/customary_law_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/datasheet_mosfet_irf630.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 2

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_off00005e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5A 5336 bytes
SHA-256: 4d64c3ee714b88ba48e414162ecab596e405e1a4be31c78e6e6e83c5d364a559
font_01_sfnt_off0000704f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 10204 bytes
SHA-256: 9b101997835bbfd7e275fdc37dc11a4d53cb6e34c99bcfc3b0f68b8e54f24c6e

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