Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5346b00ccfac937…

MALICIOUS

PDF

48.2 KB Created: 2020-08-12 16:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d52c152c3787bf0b520873add39d52a SHA-1: 32660186ed67fd54d8659e2cb5a88b4071287823 SHA-256: b5346b00ccfac937bffaadc1c46abd2c549e04c9fe4284c8cd74b9b35fd1f1cd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body is heavily obfuscated and contains a URL that is likely used to redirect users to malicious content. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector.

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=hooded+americanism+pdf In PDF document text
    • http://files.sweetrootswriter.com/uploads/1/3/2/6/132680986/wokidapafiw_xefavizetolifiw_veneti_kegetowagawow.pdfIn PDF document text
    • http://files.mapexpng.com/uploads/1/3/1/4/131452938/xobodamutapazak.pdfIn PDF document text
    • http://xukezagi.highsierrasfrc.org/uploads/1/3/1/6/131606727/3088e8e60f05f.pdfIn PDF document text
    • http://files.artplak.com/uploads/1/3/1/1/131164130/3230736.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/1/0431/1416/8480/files/9669155543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/rig_veda_in_sanskrit_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nofalefupipalivudekim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/jinusiraxuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/sifigigevizatajevepeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/bc_caste_list_in_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/negezimosob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/37044479845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/85258134932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5102/2501/files/97394226686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/58266397059.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_off00007efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFD 5232 bytes
SHA-256: dd6dbd9c6291c30a729c8b0fdd9a771570ecfe7ccf2498733a1d13016ad747cd
font_01_sfnt_off000090b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B4 10420 bytes
SHA-256: d88970eb4ad97f45860bdbb2155aef3e834a9cd93acfe3e2f44380c348c894db

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