Malicious PDF — malware analysis report

Static analysis result for SHA-256 079dc0cf0625cd6b…

MALICIOUS

PDF

73.7 KB Created: 2021-03-31 22:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7021a8ff42eb735fb90ba288b610910 SHA-1: ace39336a98e24676a97f3babdaf68829b3db46f SHA-256: 079dc0cf0625cd6b8a245b49be0aa85b3a42c00ba431f74bd4d8de59110efd42
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which point to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/award?keyword=dampak+politik+identitas+pdf
    • http://nukicew.xyz/lagu_c._i._n._t._a_dbagindasbdmzz.pdf
    • http://microdigitalmeter.xyz/joost_mod_legendary_weaponsv9fkn.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • https://biwawidojimu.weebly.com/uploads/1/3/4/6/134648839/worafibuxenulo.pdf
    • http://trynon.xyz/7104255887mflkz.pdf
    • http://verefdliyvtorogo.xyz/xetutivudibelejho6ez.pdf
    • http://healingtunes.ru/zudidumibekebaferzx0lc.pdf
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/34f6af6d.pdf
    • http://bilet-pdd.site/bissell_3624_spotclean_professional_carpet_cleaner7yvl1.pdf
    • http://glossywp.online/free_download_of_schubert_ave_mariaypzgz.pdf
    • http://storeeu.info/examples_of_inferential_questionsdwgkm.pdf
    • http://fb-pageunderreview.com/black_and_decker_leaf_hog_blower_vac_bv4000km4gf.pdf
    • https://jarufepijup.weebly.com/uploads/1/3/0/7/130776730/46be45a3bf2267.pdf
    • http://trend-sales.fun/supopateras67nxv.pdf
    • https://nowipulegetubut.weebly.com/uploads/1/3/4/6/134647137/31ae36.pdf
    • http://1xbet-regi.site/830360644636gnpo.pdf
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/cdb5647da65.pdf
    • http://physcoo.com/densidad_de_aluminio_en_kg_mm33f4y8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_1790373dff30429d89df3a0c066bc591.pdf?index=true
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_d5aecd545aad4acca4f10862d88a2a55.pdf?index=true
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_a14581a16c10472b8ac6e443dd305dff.pdf?index=true
    • https://2571d5ef-7130-409a-b87d-c3fd18a83f30.filesusr.com/ugd/71fc55_6e193cea4a6b453c93aaf78e165d6359.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e86a6fbf-75bf-4fad-b7e9-25731eb19fab/15084551464.pdf
    • https://uploads.strikinglycdn.com/files/7a408917-3fe9-4efa-a92a-4de5bfcebf9d/how_to_set_up_kindle_fire_for_child.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e38f.bin
0546cd4c1bade77a464017608b2255b9166d4d4fb4184cb324c337db82aecf50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE38F 5156 bytes
font_01_sfnt_off0000f513.bin
d446b3eab3a4127bf27da50e7c5ca9b18222629d58f79942d26cd97bee94a94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 10800 bytes

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