Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f59bbefe0d0c5f5…

MALICIOUS

PDF

44.2 KB Created: 2020-08-12 13:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25f7ba7d6073d272e3276f89e5f514e0 SHA-1: 6a86c8972e6e8f92ab06db701055c23181f9f85f SHA-256: 0f59bbefe0d0c5f535f9207d016ba2bd75529916a2709757db4ce2c661f2373c
202 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, which in turn points to a phishing page disguised as a document converter. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL confirms the intent to lead users to a potentially harmful site. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading or interacting with malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=aplikasi+convert+pdf+to+word+terbaik+android In PDF document text
    • http://xugunizet.markchrislermusic.com/uploads/1/3/2/8/132814930/3d548f02b44.pdfIn PDF document text
    • http://files.heatherbrittonphotography.com/uploads/1/3/0/8/130815026/e78fdfbe.pdfIn PDF document text
    • http://files.1travelshop.com/uploads/1/3/1/3/131384583/fe3c2276f78487b.pdfIn PDF document text
    • http://bubiwifo.madcitybadgers.org/uploads/1/3/1/4/131453284/4636103.pdfIn PDF document text
    • http://files.beautifulrooms.london/uploads/1/3/0/7/130739059/lemubusiwixi.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/1/0436/7345/2697/files/eat_pray_love_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/81151420634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9385/9240/files/rituxepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/45265246144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0605/files/68287462342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/visuvafatule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/49490438263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9572/8029/files/mugeselugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/gifovokujidewokidufesomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/gofurizupomojamodit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/sikarorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2723/4969/files/nakirifutediwigunetipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1187/2667/files/causative_verbs_lesson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/5e_gold_conversion.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D66 5496 bytes
SHA-256: 4b33054458717be4b623206dfb7cb53bdfc750c115bdd7e971db5cfd9480f810
font_01_sfnt_off00008027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8027 10344 bytes
SHA-256: d079afbce96b6df4542930732ae0aa9c539d38469ac8b85bd4a46c9222416146