Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfd37c047d617fc…

MALICIOUS

PDF

44.4 KB Created: 2020-08-20 07:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e39da2e355270a9470007ff774b2350 SHA-1: 55897665d072bd8601ffdf0f2897aaab6ea7a50f SHA-256: 7cfd37c047d617fca189b463498439e1c9e621b65f32372b60ac41b6544cad57
194 Risk Score

Malware Insights

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

The PDF contains embedded URLs that redirect to a malicious domain, identified as a redirector for SEO link farming and phishing. The document body, though obfuscated, contains text related to 'Vdo online form sarkari result 2019', suggesting a lure for job seekers. The ML classifier and critical heuristics strongly indicate malicious intent, likely to direct users to malicious content or initiate further downloads.

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=vdo+online+form+sarkari+result+2019 In PDF document text
    • http://files.lbdsoccer.com/uploads/1/3/2/7/132740214/jotuzizomuri.pdfIn PDF document text
    • http://zowejo.nmfwa.org/uploads/1/3/2/7/132712207/4871883.pdfIn PDF document text
    • http://files.saintalphonsusschool.org/uploads/1/3/1/8/131857071/b41fba5.pdfIn PDF document text
    • http://fajolikup.elisabethpope.com/uploads/1/3/1/4/131453453/4623921.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/the_astronaut_s_wife_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4306/9858/files/fikerixojukupegiwigefeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8930/files/cambridge_primary_curriculum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3464/6440/files/42081513914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/54436411741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/english_grammar_articles_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/rivukejufokazutimote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/bitegidetekerituge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6149/1365/files/mogajugawi.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 5564 bytes
SHA-256: 21cce49e073bee5c3fe9af34c559a6fa68aa6e18355175a7324e97b69207d83f
font_01_sfnt_off00006e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 9872 bytes
SHA-256: 7b4586622efc277e056b70159cde5781728fea702303179f19d5d20b09566739
font_02_sfnt_off0000905b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x905B 5160 bytes
SHA-256: 8c9fa717726c590c26fd65e0b1b03d7fe92cefc809f9540efe9e40f7dd8a13c3

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