Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6323bcfa1a69d9…

MALICIOUS

PDF

35.7 KB Created: 2020-08-14 05:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c8cb9a0197a100af873ed60a2d9daba SHA-1: 9e73289c3bd6b5c9aa88be04bcb281f358f14ce4 SHA-256: 5b6323bcfa1a69d9053679241e1733d58127558b95e6ec4f92368c9fae5f1950
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector infrastructure designed for SEO spam and phishing. The primary redirector URL is https://ttraff.ru/wb?keyword=heladera%20patrick%20manual%20de%20uso, which is flagged as malicious. The document's structure and link farm suggest an attempt to drive traffic to malicious sites under the guise of providing useful documents.

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.ru/wb?keyword=heladera%20patrick%20manual%20de%20uso In PDF document text
    • http://files.greenrivermwc.com/uploads/1/3/0/9/130969939/bawezugu.pdfIn PDF document text
    • http://kawufu.hisinsouthafrica.com/uploads/1/3/0/7/130776436/524582.pdfIn PDF document text
    • http://files.rtcpro.com/uploads/1/3/1/3/131380126/gofuzi.pdfIn PDF document text
    • http://deresu.writenotions.com/uploads/1/3/2/8/132814930/rafaretese-vilanazisen-bojugimazuxemab.pdfIn PDF document text
    • http://tojaxil.cuttingedgedm.com/uploads/1/3/2/8/132814928/timivajomer-kokipibiso.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/1/0427/9477/8791/files/porodokewolixejalezoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/how_to_talk_in_vrchat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/jixafidiwilaxupokumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/guselu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/35691032455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/tinkers_construct_reinforced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/calligraphy_brush_photoshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/an_appeal_to_heaven_book_dutch_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9663/6580/files/28629921704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/dafepawekiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/difference_between_accuracy_and_precision_in_physics.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 6

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_off00004cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF3 5244 bytes
SHA-256: b757113b9c31629639fcbea15327d49ba26c7375d8a3b425be7dbf193d01252d
font_01_sfnt_off00005ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA4 10340 bytes
SHA-256: 0f9cd18e9ea48cd89a382a4f534bdf4d8b245d08a1202b60ea3b717b4c2345c8

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