Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad716275bda6c96…

MALICIOUS

PDF

35.1 KB Created: 2020-10-25 04:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5ca9814e8cbeb7a5f3e77c00c2e5536d SHA-1: caf71a447fe21d1fbdeeead8f18d2b912885819a SHA-256: aad716275bda6c96e5f96ea80762470f6b3e1f2164cc52f5c73c80bf70845cb1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to redirector infrastructure, disguised as a Volvo VNL 2020 manual. The primary redirector URL is 'https://ggtraff.ru/123?keyword=volvo+vnl+2020+manual', which likely leads to a phishing page or malware download. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links further supports a malicious intent to distribute harmful content.

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://ggtraff.ru/123?keyword=volvo+vnl+2020+manual In PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/gawolaguzagetul_zojopuledoren_parupalamas.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/6194923.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/b98b076f11a.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/9007830febc.pdfIn PDF document text
    • https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/ca390165a1be79.pdfIn PDF document text
    • https://namonizumus.weebly.com/uploads/1/3/4/3/134345036/4277609e93e33f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fasanag/introduo_a_epidemiologia_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/grass_die_blechtrommel.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/schultte_basteln_vorlage.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/74758737902.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/bosufunelelakifu.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/post_gallbladder_removal_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/beveiligd_bestand_afdrukken.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/30397895180.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/understanding_and_using_english_grammar_5th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6951/4404/files/fallout_3_perks_per_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9431/3627/files/vocabulary_level_d_unit_4_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/suvinizeratutapeteburebog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3587/6517/files/liu_algebraic_geometry_and_arithmetic_curves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/siwijanazikugolasezotofil.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/metro_map_rome.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/42906369565.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/87946219022.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5000 4856 bytes
SHA-256: 230de05d0e4678a75ab262d5125ac2c1a4d6666d6c11c49480df53e007422143
font_01_sfnt_off0000607e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 9676 bytes
SHA-256: 8eddc628da7d52da3436b7e838c295c9805085f066b410180eb691fbe504b865