Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f284087a3d2413…

MALICIOUS

PDF

116.0 KB Created: 2020-11-01 02:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d9963b49bf86989be8e792b63ed69331 SHA-1: 98213abef1be12d9230161050c9e19c0fc37c580 SHA-256: 66f284087a3d2413e410ddeb15b0c8c3c8ec44bf66e9b90da09e9ebc0e2cd4fa
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and an SEO link farm. The primary malicious URL, https://ttraff.cc/123?keyword=1978+dodge+sportsman+motorhome+owners+manual, is likely used to redirect users to further malicious content or phishing sites. The presence of a link farm suggests an attempt to manipulate search engine results for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/123?keyword=1978+dodge+sportsman+motorhome+owners+manual In PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/007861d53b9db7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8ce2a8948b8.pdfIn PDF document text
    • https://bujupovira.weebly.com/uploads/1/3/4/4/134472582/46095ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5f9687edaf910.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/1/0505/1976/9288/files/tages.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/vastu_shastra_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/caves_of_chaos_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/how_many_ounces_in_one_gallon_of_water.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d5270c-f07a-4363-8200-9908a5c92d8b/24661296932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1367/7471/files/ipfw_spring_break_2017_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/51179326895.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/vlookup_in_r_dplyr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9566fc7-c7e8-45cb-948e-510ff4031988/57292020377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52163bdf-16b4-44a1-925e-81fc46e608d5/31465596308.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15332 3132 bytes
SHA-256: 5f922cde0e75d6f89f635f3243b0bf3e948d7d49991b72c01f6ed10be45a0135
font_01_sfnt_off00015e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E85 5852 bytes
SHA-256: 84643837518920ccdc8061dca21f8df2c005d51be45b85bab1c77894269296ed
font_02_sfnt_off00017255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17255 3320 bytes
SHA-256: 4e4628ff5989cc64ea182111a09b1a0a53863009da83d2daf60a0a561f44fa7d
font_03_sfnt_off00017fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FDF 12848 bytes
SHA-256: 6c0f062e7d430c92e4799c945901939733140b8f1b41c1cc9690cad445e2855b
font_04_sfnt_off0001ab97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB97 16392 bytes
SHA-256: 8d9529fca8e49fd747a132c86257b3f003f6793d9f50918e3e02e184cbe99d44

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