Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ae117f1c3e551c…

MALICIOUS

PDF

41.7 KB Created: 2020-11-02 16:59:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 126cfae821ecd47875dc7bc361e58b40 SHA-1: 96a2b963ace2b648a5d812def205e5444abf9235 SHA-256: 34ae117f1c3e551c9e8e87ab5ad4a3c46b704a022a763ebf5fe9f4a5cccce650
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://ggtraff.ru/aws?keyword=wssl+100+fm+radio In PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/1242677.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/luzetidog-sudadagulaba-bimapisijivi.pdfIn PDF document text
    • https://sefuzogesosemo.weebly.com/uploads/1/3/4/5/134579576/c2dfb.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/sijude_gepifexoxire.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/752275.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/2525163.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/9ab292546be82.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/cdda8a3bd8f4.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/wilugugo/anatomie_du_corps_humain_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/chemquest_23_forming_ions_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15e3ab51-aa29-4cee-bbee-9f959bdd9da4/20520862403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc3cef8-ca7d-47e3-ad3a-adbe3d4f26f3/8034883506.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/20780054163.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/22859905140.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/annotate_evernote_ipad.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_off000056ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AE 4744 bytes
SHA-256: c5f148119cdbf6c63f3e1b7038861c9ebb7ba1efa6a4c19919c124443fb64956
font_01_sfnt_off000066c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 10808 bytes
SHA-256: 8ca47fb1334ccb0b529b1f6bf1d1e27c2e30b6e677376202560007ff550a7faf
font_02_sfnt_off00008bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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