Malicious PDF — malware analysis report

Static analysis result for SHA-256 564177e0ac91b3e8…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 06:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f9248e03af620e6c001a4731fc6adc9e SHA-1: a3a14b15d3aad09eb5e63ec677b600740cb69c6f SHA-256: 564177e0ac91b3e889ac82311234ee5b6072a89247e8c05c711a709629d78030
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=dragon+touch+y88x+manual In PDF document text
    • https://xalovediluf.weebly.com/uploads/1/3/1/3/131380345/e5891625.pdfIn PDF document text
    • https://kabuxezalexafa.weebly.com/uploads/1/3/0/8/130814122/4374494.pdfIn PDF document text
    • https://jikovezogid.weebly.com/uploads/1/3/1/4/131407088/xafibonafubo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_6018b44b06c82.pdfIn PDF document text
    • https://dagigofeno.weebly.com/uploads/1/3/4/8/134887245/b5eedddb4.pdfIn PDF document text
    • https://vilewojux.weebly.com/uploads/1/3/0/8/130874250/6557290.pdfIn PDF document text
    • https://xoxomupufolud.weebly.com/uploads/1/3/0/9/130969418/gezugejuli_kuxore_romusanazomaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_602c07803713e.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/embed_ssrs_report_into_web_page.pdfIn PDF document text
    • https://gipoxafevipetim.weebly.com/uploads/1/3/1/3/131398102/zebawogejolunow.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/fesasoxoxen_xobebufoku.pdfIn PDF document text
    • http://xilagima.66ghz.com/fakuxanozinobos.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/lixuzo/what_happens_when_a_transmission_range_sensor_goes_bad.pdfIn PDF document text
    • http://wosolebaxuwutux.rf.gd/82854645506.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/nawewaleroloderadujigid.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/list_of_all_brandon_sanderson_books.pdfIn PDF document text
    • http://nexofemexer.epizy.com/35312350015.pdfIn PDF document text
    • http://wigezenefibi.epizy.com/21162574388.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/chronic_low_back_pain_guidelines.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_off0000c2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B1 5112 bytes
SHA-256: d0e52a9154c2ec3e0834950785605b98a1a231580c0668ddeb0e87ab8a3a4ab2
font_01_sfnt_off0000d3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E7 14168 bytes
SHA-256: 5e4219031fe9d2ce78ba372a5006206aba5b27dd5a0e35a73fbcff7548841162
font_02_sfnt_off0000ff6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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