Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8577ba2edc85301…

MALICIOUS

PDF

45.9 KB Created: 2020-08-19 09:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b8c158e56ad21dd10b3ed134780725f SHA-1: ff14ba3f0fc0b81fb6546ed963e32b7793e081b0 SHA-256: c8577ba2edc853016919ff72f12bd8af942dec438ab99b789696f833eff36b12
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a financial analysis report, and the URL itself includes 'sample financial ratios analysis report' in its query parameters. The ML classifier strongly indicates maliciousness. The primary attack vector is likely a phishing attempt to redirect users to malicious infrastructure.

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/pify?keyword=sample+financial+ratios+analysis+report In PDF document text
    • http://wosug.mercedesclubindia.com/uploads/1/3/2/6/132681513/7295df836481.pdfIn PDF document text
    • http://kagoboda.caringforzebras.com/uploads/1/3/0/9/130969408/xipejuf_jowoguvojezokij_kowiriro.pdfIn PDF document text
    • http://files.myartyouwearjewelry.com/uploads/1/3/1/4/131453539/kukuxubuv-lugarugixarafod-vabojudu-wadonuzuzu.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/1/0438/1140/5986/files/asymptotic_notation_in_data_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/fukivizekozozizelikisigiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/doxikokafofoxajaxanugedat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0230/2362/files/wukaralubofomuwaviwoweren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41557636134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/nevivipowolarow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/kabagabomisifijidupive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/49232902311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/bible_verses_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/bomasukupigudapokid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/34382081491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/3124267840.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_off000071c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C5 5364 bytes
SHA-256: 51c8fae3b68aaecc1198b3816fb68fff7d96a297c83339f36c7f7a46489cf238
font_01_sfnt_off000083f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F1 11468 bytes
SHA-256: 6de61d1fcdaeecba755d9f74f970712706d074cec548ca07494716816e780d8f

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