Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71f4fd05501fb35…

MALICIOUS

PDF

50.8 KB Created: 2020-08-04 17:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d65f1826a8feef4be746c0f96dbba984 SHA-1: 1bf2d48f2ed5509f0e9e8f67c29291c26a920717 SHA-256: e71f4fd05501fb355a0ae75ffe2d7fb7cbe58b3be7c6556bcc1ac3b52368f7b7
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a reference to 'ms sql dba interview questions and answers.pdf' and the malicious URL, suggesting a lure. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL.

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=ms+sql+dba+interview+questions+and+answers.+pdf In PDF document text
    • http://files.musicattheoldchapels.com/uploads/1/3/2/7/132710565/mubuvosawonazup.pdfIn PDF document text
    • http://files.edhiresolutions.com/uploads/1/3/0/8/130874180/9525148.pdfIn PDF document text
    • http://files.vickialford.com/uploads/1/3/1/4/131408170/9117558.pdfIn PDF document text
    • http://files.dogsltdtraining.com/uploads/1/3/1/3/131383607/67589f51.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/68819524961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/29452586007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8695/files/gedobugexusado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/kasuwure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/advertisement_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/41355448362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6463/files/8684435145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/gizijemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/lionel_richie_i_call_it_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/7043818297.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FE 5372 bytes
SHA-256: 74d5002c788b617a1a205305785ce757011009449c871bbebeac47e814269917
font_01_sfnt_off00008c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C61 10356 bytes
SHA-256: cee40ccc58bb7c7128845557d35f382e43e1172e6ac0ded9ca9f11a82d7287b7
font_02_sfnt_off0000af89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF89 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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