Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5fd54d1d3dddd5…

MALICIOUS

PDF

34.5 KB Created: 2020-08-23 18:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 70b7675ba9bbafe8474f7bb1e03c56e1 SHA-1: 661da45fcb54ae3443f75d56158dee67ee72ef1e SHA-256: ce5fd54d1d3dddd5527edd81e76c4190bb4869b84115f0bd788fd1f507d65f0c
162 Risk Score

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=vaaste+ringtone++mr+jatt In PDF document text
    • http://files.8citiesnb.com/uploads/1/3/0/9/130969218/6341475.pdfIn PDF document text
    • http://nepadeb.balancefromwithinwellness.com/uploads/1/3/1/4/131438379/bf1f1.pdfIn PDF document text
    • http://files.moanxiety.com/uploads/1/3/1/4/131453588/dedonepepedewi_fiwikajozasav_dazodijo_worebogum.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/1/0434/4496/1436/files/17817780465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9367/2604/files/67066114727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/voneruzufevobupebex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9994/7162/files/causes_and_prevention_of_hiv_aids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/29154698021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/misutagisewuluwatesofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/20416569062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2264/5408/files/pojapupelew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/luwudogewanemuxeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/40866299856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1321/3093/files/definicion_de_anorexia_y_bulimia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/90168899629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3581/1231/files/gebusubobazurotitedem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8688/8601/files/pilodusabiwudoxox.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_off00004ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC1 5016 bytes
SHA-256: e5e05c0c3c065752a38d20143edde32225c08a44320e9cf251d83a340fe99318
font_01_sfnt_off00005bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBC 9804 bytes
SHA-256: 669969607e2d32de0c65dac81b98543a4ff68d037e899f47c8040f331d8c987b

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