Malicious PDF — malware analysis report

Static analysis result for SHA-256 114720e37386b641…

MALICIOUS

PDF

46.3 KB Created: 2020-08-08 21:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 159c1463ae93fd7ef6fe758ec9a13699 SHA-1: 674983d9a4754a44549865b95d1184da00b840dd SHA-256: 114720e37386b6418fd7bfe7680734ba81f3a937f7f0164a98ade1ae6e6ca483
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious URL, identified as a redirector for SEO spam. The document body, though heavily obfuscated, contains text related to 'Spanish language learning book pdf free download' and the malicious URL, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious.

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=spanish+language+learning+book+pdf+free+download In PDF document text
    • http://files.locksmithpros-wa.com/uploads/1/3/0/7/130739654/3682248.pdfIn PDF document text
    • http://files.gairdin.com/uploads/1/3/1/4/131482975/bibesifuwoxug.pdfIn PDF document text
    • http://jalaru.kenjorgensendesigns.com/uploads/1/3/1/8/131856257/4623925.pdfIn PDF document text
    • http://files.ohvta.com/uploads/1/3/1/3/131383493/vovule.pdfIn PDF document text
    • http://files.jennamilleryoga.com/uploads/1/3/0/7/130775741/8437249.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/1/0434/6016/5797/files/sunuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7154/files/vevubawaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/66164699881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2417/8600/files/biochemistry_book_stryer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/jujutifefiforedin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/86579126644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/rexagiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5557/files/89172226057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/acca_f8_past_exam_papers_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3485/9930/files/cheryl_strayed_book.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 3

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_off0000766a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766A 5704 bytes
SHA-256: 877a8f78bf0ae016f7fea3256a1306b8c97cbda2f1b04a0ce5a3e61a027878c2
font_01_sfnt_off000089d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D1 10088 bytes
SHA-256: b6c69ae223b9c4452d412e0d2b611612aa2d4f6159141aef176a8b78d5f58aef

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