Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd846efa675078d0…

MALICIOUS

PDF

58.4 KB Created: 2020-08-14 04:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e5353f30e787c7bd2dfe349201d6231 SHA-1: 58dadbefb27d07da0a2a1b19f8c34c80076dbba4 SHA-256: cd846efa675078d08b232f43874a4082a65172e209ed8dd3e5743717149346ce
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://ttraff.cc/pify?keyword=school+days+punjabi+song+video, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious content. No scripts were extracted from this sample.

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=school+days+punjabi+song+video In PDF document text
    • http://files.facedesignplasticsurgery.com/uploads/1/3/1/4/131452880/27dd04a9d6c242.pdfIn PDF document text
    • http://wofofox.lightmagicus.com/uploads/1/3/2/6/132681352/nasujaxejon-kubivesetit-zukababavawemam-buvewab.pdfIn PDF document text
    • http://zejiforat.fyiexpress.com/uploads/1/3/1/6/131637814/jukat_lowopilemuruseb_rugajari.pdfIn PDF document text
    • http://files.burrow.nyc/uploads/1/3/0/9/130969654/21204d2a8e2a4.pdfIn PDF document text
    • http://wozan.thepalmerlawfirm.com/uploads/1/3/1/8/131856158/49a63b558c632.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/1/0432/7217/5772/files/pedemonomijudunol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5520/8865/files/5551660682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/chemical_principles_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/jolixejowozuladazigedef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/samokotubivulekosowedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/avast_antivirus_license_key_free_2038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/chicago_traffic_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1885/2264/files/88100610639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7951/4777/files/python_turtle_curved_line.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/69927006861.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
font_00_sfnt_off000089a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A3 5720 bytes
SHA-256: 9d2f79d5a1a2cfefb1934461d1e41b94125deacf1c1f5fac578bd1fc413bac59
font_01_sfnt_off00009d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D19 11000 bytes
SHA-256: dc4ce03dfcd6ea107b22c839adf108ba00b882d0ffbecf4e8fd20f62d69341c1
font_02_sfnt_off0000c30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30B 7656 bytes
SHA-256: e3e61e2546b24f8f6e6a47dcb942f019bc8b49a1cec4f369b06933574d68084a