Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80e8ace8c3a6d02…

MALICIOUS

PDF

52.6 KB Created: 2020-08-15 06:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90754f602af0a5a1120ce46d77a7fe96 SHA-1: f7ec30bf52a03ebe71a9203fa0e5d6710e7a7328 SHA-256: a80e8ace8c3a6d023656b8913d42b13f62836b7d59df17d74e1948264e7f4ab5
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 of which point to Shopify domains hosting other PDF files. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru' which is used to deliver a payload related to 'spotify apk free premium'. This suggests a social engineering attack aiming to trick users into downloading malware. No scripts were extracted from this sample.

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=spotify+apk+free+premium In PDF document text
    • http://mumotune.pro-motionfitness.com/uploads/1/3/0/8/130874655/xutikus_rajovubekidomos_maguvigajiso_kariwumutuk.pdfIn PDF document text
    • http://rusagej.glmb.ca/uploads/1/3/2/3/132303382/vuwuput-pawodizamazo-vejulejewox.pdfIn PDF document text
    • http://files.roswellorchestra.org/uploads/1/3/1/3/131378779/9685406.pdfIn PDF document text
    • http://files.kingdomofchristrealities.org/uploads/1/3/0/8/130814298/753f526f96d.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/1/0437/7329/6789/files/psiphon_pro_handler_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/kuzeredabiretokutoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/xawatew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/rugelujokufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/nattakurinji_varnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/38645478846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/10664407257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7697/6791/files/sistema_de_gestion_de_calidad_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/air_pollution_in_kolkata_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2090/9725/files/gefirujufapaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/bncc_atualizado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/44283738027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9699/0115/files/66925587740.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A3 5104 bytes
SHA-256: b96b851dfbc98e6db42ce513156a676cad38d75e0f5f4195c834be7c0bfeeb85
font_01_sfnt_off00008af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF6 10636 bytes
SHA-256: 5715a2ac4f179ea3b7b7ebe5d731efb59a2b770b6840ace6f91971a52ae1bf89
font_02_sfnt_off0000af8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF8C 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660