Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fcf16160aa7bc32…

MALICIOUS

PDF

51.4 KB Created: 2020-08-12 09:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21562b8848483702688059f751f21bff SHA-1: 49940d2a2f9798f0041ada378e860ff6931c8397 SHA-256: 0fcf16160aa7bc32dd6251090207473c647ca81fa84714c6905de59845e5f66a
202 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to a redirector service, which is a common tactic for phishing or malware distribution. The heuristic firings indicate the PDF links to known malicious infrastructure and is part of an SEO link farm, suggesting a malicious intent to drive traffic to harmful sites. The document body, though heavily obfuscated, contains text related to 'marriage certificate form pdf mumbai' and the malicious URL, reinforcing the lure.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=marriage+certificate+form+pdf+mumbai In PDF document text
    • http://files.ghecca.com/uploads/1/3/2/7/132710779/0c3656.pdfIn PDF document text
    • http://vubifij.progressivenewsradio.org/uploads/1/3/2/8/132814989/365748.pdfIn PDF document text
    • http://files.merarifernandez.com/uploads/1/3/1/4/131407165/6839308.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0427/5650/5756/files/18232059811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/41244533097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/39225082265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1091/9321/files/fivenunilimunemabunetenom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/gloomhaven_rulebook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/blague_de_toto_courte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6735/6824/files/jotagagobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/bolens_riding_lawn_mower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/bipixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/righteous_mind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/60322985653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9158/3391/files/60455205328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/22306766576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/amber_run_i_found_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0604/0992/files/51038654907.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a022.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA022 8700 bytes
SHA-256: 1ca6089169e4fafd8acd1852e5b05a04aa8b67eabad31da17a70c4c2b78c44b0
font_00_sfnt_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 5408 bytes
SHA-256: ebd82ce3f537112c1b3b1b7a39870840048a66fd6e3b50208b5321621c043e41
font_01_sfnt_off00007d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4F 10120 bytes
SHA-256: 5625c4bdcfa0844a1ab7c6a78a9e69c3aa258fe7b627587d65feeb43df4725ce