Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a7982b8970f669…

MALICIOUS

PDF

48.1 KB Created: 2020-11-03 02:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4cc5875a0f2713081d574ee7be1852d7 SHA-1: e3af9e13175d7f73b231d8e1a1d33e1fc2cd68e2 SHA-256: e2a7982b8970f6695f6e21ab7ac1a8ba342943ff5ca6102b562c8b9128229573
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a known malicious redirector. The primary malicious URL identified is https://ggtraff.ru/123?keyword=body+beast+abs+exercises, which is likely used to funnel victims into a phishing or scam operation. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to distribute links rather than present readable content.

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/123?keyword=body+beast+abs+exercises In PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/xemonozapidinutixopa.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/gedapagasasu.pdfIn PDF document text
    • https://bevowodawalejap.weebly.com/uploads/1/3/4/3/134363876/dagugotemizoreb.pdfIn PDF document text
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/dezusojebuli-nadabibe.pdfIn PDF document text
    • https://tufelovewojamex.weebly.com/uploads/1/3/4/3/134331554/7343785.pdfIn PDF document text
    • https://fuwurugosudopo.weebly.com/uploads/1/3/4/3/134326966/jafebuwode.pdfIn PDF document text
    • https://xakexoxos.weebly.com/uploads/1/3/4/3/134307698/nomusil_wekanu_tikisitiso.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/1/0486/8256/5782/files/75705748685.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/xipirejuruvaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/1200292704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1464/1605/files/booked_kwame_alexander.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6267/0523/files/gabodepuda.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/65779764599.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/las_frases_mas_usadas_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7182/6839/files/34620257522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/measuring_angles_worksheet_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3912/0279/files/ziniriz.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_off00007d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D15 5260 bytes
SHA-256: 7be76b5374d6f0b6f03e282409f2c2d880690632fea9365f0709e38abb53312e
font_01_sfnt_off00008f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F10 10620 bytes
SHA-256: 99dea03785546e4553b54e826d85dc7946ac11ce03f6d9cc4017b691df62b448