Malicious PDF — malware analysis report

Static analysis result for SHA-256 836de22186d27562…

MALICIOUS

PDF

39.4 KB Created: 2020-10-26 12:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: cb3d4f685b893f48de2c2f6609de95da SHA-1: 62b76f700f7edd7ac97da8ffafa866927d49009b SHA-256: 836de22186d27562b5e3d9ffb49c2912dad3e4ce039da24f567a3ad4d80f55c0
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/aws?keyword=sahasra+ek+arabya+rajani+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86fd4e4c524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5f8ded8693f14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_5f8e6f9903e1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f89850931afe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_5f8fb67b933bc.pdfIn PDF document text
    • https://wifajeru.weebly.com/uploads/1/3/4/3/134342489/vekew.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/zuwir-pibal.pdfIn PDF document text
    • https://rosofofupamufi.weebly.com/uploads/1/3/4/3/134364257/6266263.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/1/0481/8033/0653/files/divine_mercy_chaplet_novena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8172/7640/files/ea_sportstm_fifa_20_companion_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6443/4589/files/nat_geo_magazine_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4730/5635/files/hippocrates_on_ancient_medicine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5367/0822/files/mibafubavini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2769/6286/files/urban_planning_portfolio_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/66243359676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5516/files/30091817049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7709/files/sicariato_en_el_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4149/files/funny_quotes_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/wobewemiguw.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/47273768974.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/common_noun_and_proper_noun_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/chief_ministers_of_india_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/zepiziwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6127/5552/files/barogopazowapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/writing_numbers_in_word_form_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0342/7993/files/ocean_breeze_air_conditioner_filter_light.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_off000058de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DE 5580 bytes
SHA-256: 614e4df1efb2ba7f892cd9823ecada961ab2f1e0a8c9baa1b7cb0ba11e9f6058
font_01_sfnt_off00006bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD2 10568 bytes
SHA-256: 1e95f3f9f81ab1db928519bb09fe059ef0ca06f17965b46bb255db05e040b6ae