Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d3717194a3cb4b…

MALICIOUS

PDF

77.5 KB Created: 2020-10-20 09:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3e9ff70876b67de9d0905d4fbf8bc450 SHA-1: a01d5169210844c74a64ff71c58e22d1ca6992b1 SHA-256: 41d3717194a3cb4bb0b39fa128e5e6bfac01b701fbf8fe6ecd6316e88cdd4640
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised as a free download for 'Sampoorna ramayanam telugu pdf free download'. This indicates a phishing or social engineering attempt to trick users into visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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/123?keyword=sampoorna+ramayanam+telugu+pdf+free+download In PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/gower.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/vamefuxuxufib.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/wudaregodaf.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/tezofasaganezasaxosi.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/tarexakuzalip.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/13242.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/4235858.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/1/0484/6898/3969/files/54457141130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7835/6644/files/hill_climb_racing_2_hack_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3055/6053/files/shattered_glass_wallpaper_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8099/8298/files/pfaff_1245_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5086/4287/files/fuvesun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/describe_a_person_esl_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0522/3327/files/sims_3_offline_apk_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8388/2392/files/watch_gravity_online.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_off0000e956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE956 5480 bytes
SHA-256: 4b555e32d77a6dcaf68a88e2028352ad61eaeb0350448af34bb520243f6d2d18
font_01_sfnt_off0000fbf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF2 14472 bytes
SHA-256: bd0602725da6f8d74de8ec6bcc376a7fc2536b07b6cf17acd21509db9c91e23e

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