Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7f2be4d465899c4…

MALICIOUS

PDF

44.4 KB Created: 2020-08-05 23:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ab568b2545c62992d959b59f84cd4e1 SHA-1: 184b5cc79972f3d0434690a4237d6311251b46d3 SHA-256: b7f2be4d465899c4a06af907bab2705f5affbab51dccd4dccbca9627e1b3d655
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external PDF files, a technique often used for SEO poisoning or link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=albert+einstein+quotes+pdf'. The document body, though heavily obfuscated, contains text related to Albert Einstein quotes and the file's creation metadata, suggesting a lure to disguise the malicious intent. The primary goal appears to be redirecting 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=albert+einstein+quotes+pdf In PDF document text
    • http://files.gpdmu.org/uploads/1/3/2/6/132695865/6446863.pdfIn PDF document text
    • http://files.bondiandeasternsuburbstheatreco.com/uploads/1/3/0/7/130775677/4c25e56b.pdfIn PDF document text
    • http://files.goodgirlsgonegrimm.com/uploads/1/3/0/7/130776749/9022892.pdfIn PDF document text
    • http://files.fringeelectronics.com/uploads/1/3/0/7/130775391/mubeje_kudezamoxifo_zenopagavixug_lujolo.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/1/0433/0687/7080/files/xezunegudowafosixezuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/32353158933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/90235494348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/rinejajixojuxagutipasux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/surewezuvenal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/surah_yasin_jakim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/get_element_by_id_in_view_port.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/segutovolutepabalodamomag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/55723461158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/74797312814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/nanuxoxozalaturufenowen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/sunegaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0800/0163/files/godezojuno.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 7

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_off000070fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 5080 bytes
SHA-256: 1835de5f84cbc71773f6ab0ee98df898ea599f89e43c319a24eaab4d266acf23
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 10088 bytes
SHA-256: 91ef366a8d2077e4065df8f2c144aea2226da6255bc89775b9777d9b7871d98e

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