Malicious PDF — malware analysis report

Static analysis result for SHA-256 984e970814041bd5…

MALICIOUS

PDF

46.1 KB Created: 2020-10-20 20:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b610f257a99235167a231afd8a2d9645 SHA-1: b3238eb95ce93281a91bdf8ff3bfeb84663fb9b0 SHA-256: 984e970814041bd5b48201970bd08c4782053daa46b492e659daa64349aadae5
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.cc/123?keyword=life+of+samuel+johnson+boswell+pdf In PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/rezazem.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/825a3b4957.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/begazareju.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/1/0496/2251/5865/files/famatopud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8532/3168/files/how_to_get_from_where_you_are_to_where_you_want_to_be.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9948/0998/files/examples_of_decomposers_include.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5079/3658/files/14906081770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8396/7896/files/case_conceptualization_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/945abda0-b5f9-490b-890b-10e8eb89efa7/crusader_kings_2_fabricate_claim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3acfe429-7f2d-4eea-81e3-9452d5c1035e/zijovevarexufatuzuzis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/nirugejejuteraketebedopij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9346/8347/files/wapking_punjabi_hit_song_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9120/1700/files/fun_table_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9845/files/22937019796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/infamous_1_ps3_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/87696751566.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/sirefulexorevezov.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/kewewanaso.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/januxatezemuberofukox.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/jukegox.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/19351534696.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/rakidabefe.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_off00006bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 5432 bytes
SHA-256: 58d99cb6efd476dc28d05bb8b1c0da540c4c3ca324c0f952d5336c791223ea20
font_01_sfnt_off00007e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E61 13948 bytes
SHA-256: ef77ed02b6c6a354ee829089534bdf59d26e851bf0371ee34d36f2e252d8cf3b