Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5a47823bfc33a3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 12:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ce58dfb5f559073e6fd93e50ce8b710 SHA-1: 1ee965fc6a651ea11a455dd4e98cc459a1ff42a1 SHA-256: 8f5a47823bfc33a3556720a7862610c0f4afb09d5784b38c55ff4de77bd712d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which are designed to mimic legitimate file hosting services but ultimately redirect to a malicious domain. The document body, though heavily obfuscated, contains text related to a 'chemistry book class 12 pdf' and the malicious URL. This suggests a phishing or redirection attack aiming to trick users into downloading further malware or visiting 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.com/pify?keyword=chemistry+book+class+12+pdf In PDF document text
    • http://files.lyndonleadershipconference.com/uploads/1/3/2/7/132740805/2027330.pdfIn PDF document text
    • http://files.myztery.net/uploads/1/3/2/6/132696155/9472412.pdfIn PDF document text
    • http://kerez.soccerelectric.com/uploads/1/3/0/8/130814328/12713f1.pdfIn PDF document text
    • http://pugite.hillsburghbaptist.com/uploads/1/3/2/6/132695329/finerorakedabek-jeref-vuzevidukezuzes.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/1/0433/0107/7142/files/pomewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/ruzadinovisimovoxatemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/72754350066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0336/9878/files/79473069570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/wisevuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/45059854170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/49469619551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/levisamokidokakotok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/78962058400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4223/4791/files/83170869803.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000651b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 5792 bytes
SHA-256: 9f4343d64151320a3d023bfa9587a94f6b581bb836473c7b96bb44d9be8d4d1e
font_01_sfnt_off000078aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AA 9888 bytes
SHA-256: 50e1eee4bc5e58cf11ce61f1505d5d577e589b52a677cde8abda3208339d1b5a
font_02_sfnt_off00009ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD0 2784 bytes
SHA-256: 42923c3470ede73934010439524ecf1bef59234cefecaf2ec823372c12b35008

Open this report in the interactive analyzer, or submit your own file for analysis.