Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96301b728436a95…

MALICIOUS

PDF

64.7 KB Created: 2020-10-14 22:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2dfc0fad6699e97fd23048eafdb1bd79 SHA-1: 770990f7ded52060b0a88a33d8efe666abb0649f SHA-256: e96301b728436a95ce5cc39d010f8d62f8c520a0278c375472e85bddbf8d31ac
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent URL, 'https://ttraff.me/pify?keyword=firewalls+for+dummies+pdf+download', is flagged as a malicious redirector, indicating an attempt to lead the user to harmful content. The ML classifier also strongly indicated maliciousness.

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.
  • 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.
  • 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.me/pify?keyword=firewalls+for+dummies+pdf+download In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/bagatazojiz_sidatasofugugor_sofaxazute_gureluf.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.pdfIn PDF document text
    • https://site-1043120.mozfiles.com/files/1043120/siwurazudulofojeferar.pdfIn PDF document text
    • https://site-1040360.mozfiles.com/files/1040360/vokapesu.pdfIn PDF document text
    • https://site-1042510.mozfiles.com/files/1042510/piloko.pdfIn PDF document text
    • https://site-1043809.mozfiles.com/files/1043809/mepoxuvozorexonapi.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/1/0435/3854/6840/files/el_bosque_de_los_pigmeos_resumen_capitulo_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/mikasozipibeseborana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1819/9462/files/ang_probinsyano_july_12_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7629/1226/files/equilibrium_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/wumukubalugemiberulilike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/turixugavesosugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6289/3471/files/rinasisevexikepufiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a9f2ad-a3cc-4b9d-8f9e-6d1868e27c66/zuwufibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d66da12-7b55-4b46-b057-794b232134e5/14347145441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa0da73-1ddc-4887-a873-af5b0b92f1d0/54790394220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/864a7c17-dd4f-4798-8ee0-f78a13374aa5/98096734906.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_off0000bf3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3E 5232 bytes
SHA-256: bfba6919f1922782d19ee15ec252eea973d18054f489e487386d345a4178ca82
font_01_sfnt_off0000d106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD106 10532 bytes
SHA-256: acec7afc727689dbe596009ce0548002b9ca24e1040fc6a991014d103599e631

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