Malicious PDF — malware analysis report

Static analysis result for SHA-256 a916caa1e022d4a7…

MALICIOUS

PDF

44.7 KB Created: 2020-11-06 03:15:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 59b0142612f08ccf0240c6fc7518f840 SHA-1: 3aaa227de55077442f4dd28f7bad06cb5a23eb7a SHA-256: a916caa1e022d4a789246b0ba0cc162a0a7496d71917b8cd76e8ca81deee376f
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=meeting+rooms+near+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5fa109bf59cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f8b2fc4288f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_5f99ebb7c2ef2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f8a65294871b.pdfIn PDF document text
    • https://giledaxije.weebly.com/uploads/1/3/4/3/134312043/78eee54c3a3c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5f9c51e132629.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tezofuretejom/algebra_1_chapter_8_mid_chapter_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/sabarimala_temple_opening_dates_2018_to_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/dead_mans_volley_breath_of_the_wild.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/are_we_there_yet_tv_series_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/fosofewisezagetezakefegix.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/nolozot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/61420414926.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 4764 bytes
SHA-256: 07fa47977c13e42dee30fb78398b09028a9f2d0d0ac90125dedd34725301294d
font_01_sfnt_off00007583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7583 10272 bytes
SHA-256: 2d3e922fe16447dd49e3612f33e7539cbd38ff1a53829b34f85ea8fb4bd3910f
font_02_sfnt_off0000980f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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