Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecdeb1df95607e8…

MALICIOUS

PDF

48.4 KB Created: 2020-10-28 10:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2df7acfcd5041188d8684006d9d5d2c9 SHA-1: d1350326b90e3617d0dbf0c2638efba8ff402254 SHA-256: 9ecdeb1df95607e891b041a3d478287f7c8f9e90eb3c691cb2e0399487ebaa3e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate the PDF is designed to host a link farm, directing users to potentially malicious content. The embedded URLs, such as https://ttraff.com/123?keyword=thermofight+x+it+works+side+effects, are likely part of a spam or phishing campaign.

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.com/123?keyword=thermofight+x+it+works+side+effects
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/fajeguxako-wodom-taziwifiwakodil-gitin.pdf
    • https://nigupisotaku.weebly.com/uploads/1/3/4/3/134374455/4f7dc3.pdf
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/bagar.pdf
    • https://deperomider.weebly.com/uploads/1/3/4/3/134344929/c7a25.pdf
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/bigaweferufemox_jemoxenifawu_tevuropijatoj_vosavijaf.pdf
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/2745294.pdf
    • https://kulilopoxi.weebly.com/uploads/1/3/4/3/134375859/77b7e305e0d3.pdf
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/kebifif.pdf
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/pasimituvegu.pdf
    • https://korumarivaz.weebly.com/uploads/1/3/4/5/134506991/5292327.pdf
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/kanulelowima.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0495/6572/8920/files/quiznos_bread_calories.pdf
    • https://cdn.shopify.com/s/files/1/0497/7750/8541/files/new_play_store_download_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/daxuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6140/files/synonym_and_antonym_with_urdu_meaning.pdf
    • https://uploads.strikinglycdn.com/files/9b8a1757-16e2-4de5-84f4-65e3cf48e6dc/40825722238.pdf
    • https://uploads.strikinglycdn.com/files/f08a2836-2762-4823-bd20-bd90bdbacbe9/vokuwabulatotemasa.pdf
    • https://uploads.strikinglycdn.com/files/c631e78f-202b-461d-bead-89e5355d2633/20423482573.pdf
    • https://uploads.strikinglycdn.com/files/ec3bd9a8-cb20-4a29-a85b-47b2a92ae192/dewavina.pdf
    • https://s3.amazonaws.com/zonivezada/10616112462.pdf
    • https://s3.amazonaws.com/pazifetanegapu/golden_eagle_baccarat_strategy.pdf
    • https://s3.amazonaws.com/tadovu/22646533411.pdf
    • https://s3.amazonaws.com/tadovu/ragodo.pdf
    • https://s3.amazonaws.com/wiwuxot/anaerobic_and_aerobic_respiration.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_off00007c48.bin
30bc7c39bb7068c13b5154004417dde6e6d44ba59880f1b4cdbd66c98725f162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C48 5364 bytes
font_01_sfnt_off00008e85.bin
ff72e18f9e34d3263279276bf21c46560f6038b2ccddfef0e831e9ddac7a6d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E85 10888 bytes

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