Malicious PDF — malware analysis report

Static analysis result for SHA-256 327b72ed1b4e06cf…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 18:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 61c7b31e3e6029366a168b88fe9b7876 SHA-1: 6a767703506910cb7aa107296acb17bee6654333 SHA-256: 327b72ed1b4e06cf6ba9600f63bd3006888ef6c0b3971f7bd96fc0f820f16eb3
194 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.
  • 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.com/pify?keyword=magic+mike+xxl+parents+guide In PDF document text
    • http://napozowa.lunabloommaternal.com/uploads/1/3/0/8/130814328/jekuzozosi.pdfIn PDF document text
    • http://files.behrmanoutfitting.com/uploads/1/3/0/7/130739529/wobowere-pobutiparuf-dafatomo-nozomoz.pdfIn PDF document text
    • http://module.dansearts.com/uploads/1/3/0/7/130775291/sopositi.pdfIn PDF document text
    • http://files.stevecrowhurst.com/uploads/1/3/1/0/131069764/gizasedebo.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/1/0427/7937/7830/files/zebidabisewavalosiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/jubusafodis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3385/4101/files/li_bi_ht_cho_con_bit_yu_thng.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3010/8581/files/2nd_puc_biology_important_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/dujazoxepinumuvulidolibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/rejetuzejanuguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/rujovuzijipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1924/8295/files/14463414403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/25206011022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6515/4463/files/pokemon_platinum_distortion_world_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/obstructive_sleep_apnea_patient_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/12080214292.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_off00006995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6995 5528 bytes
SHA-256: d95a72abf8018f5fc3af1d78dafcc5a80dc8b88a1449623fbbc2c49291e491af
font_01_sfnt_off00007c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C58 10172 bytes
SHA-256: 0e11b95a729d85bf3671825d810f791065cdbb0374be98cd8b9dd3442329e0b6

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