Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadcd0aab60e924c…

MALICIOUS

PDF

33.0 KB Created: 2020-07-08 23:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 5f0bfd3f9843c4eca643b1365564e31a SHA-1: b0da23c8c610fa5f49f162aafdf6cbf1156776a8 SHA-256: aadcd0aab60e924c8d7f5eccf81489090d9203d3037c4c942b3b64905577f9ac
184 Risk Score

Malware Insights

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

The PDF document contains a lure related to an electric pan manual, but its primary function is to redirect users to malicious infrastructure. It embeds a large number of links, including a critical redirector link to ttraff.ru, and numerous other PDF links, indicating a link farm or SEO poisoning tactic. The document body itself contains garbled text alongside the malicious URLs, suggesting it's designed to obscure the malicious intent.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=manual%20da%20panela%20el%C3%A9trica%20brit%C3%A2nia In PDF document text
    • http://files.talesfromawargameshed.com/uploads/1/3/1/0/131071035/4942229.pdfIn PDF document text
    • http://files.sanmateolimos.com/uploads/1/3/1/3/131383553/612544a.pdfIn PDF document text
    • http://files.gilliantorckler.com/uploads/1/3/0/8/130874629/gomenevidi-kinepowa-xasokipa-xupuzateseroji.pdfIn PDF document text
    • http://files.languagelearningforchildren.com/uploads/1/3/1/1/131164007/savaradoge.pdfIn PDF document text
    • http://files.kkcoreconnectionpilates.com/uploads/1/3/1/4/131406433/damorif.pdfIn PDF document text
    • http://files.williamsburgrec.com/uploads/1/3/2/6/132682745/tagogumolizim_fofuzipupi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://teliwupuko.files.wordpress.com/2020/07/52309220257.pdfIn PDF document text
    • https://lanopuxaje.files.wordpress.com/2020/07/fulotugajakatogemulem.pdfIn PDF document text
    • https://jewiwirivi.files.wordpress.com/2020/07/fuwesesu.pdfIn PDF document text
    • https://kuxadil.files.wordpress.com/2020/07/tarekumaboludopopolaw.pdfIn PDF document text
    • https://bufabod.files.wordpress.com/2020/07/32635726138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.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 8

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_off0000457d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x457D 5188 bytes
SHA-256: aa8c723e02132913451e582130ef964b3d05fac0e0e7f8f78ba11d7e5b24acfc
font_01_sfnt_off00005648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5648 9364 bytes
SHA-256: 3e8594257eb2a448b374e912a976862fe0c460b9d6af99a22e600dbf353224a4

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