Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e89dd768f3d59b1…

MALICIOUS

PDF

44.4 KB Created: 2020-10-16 19:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 22605f2e93db17384ebcfc926009f214 SHA-1: e4881110e9af48fc2fa22740104fa5be8be5cdc3 SHA-256: 9e89dd768f3d59b187ed0c272a952da5b81234ad55ce7edb267bad153846f901
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to downloading hacked game versions, suggesting a lure for potentially malicious downloads. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=pokemon+go+hacked+version+apk+download In PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/28f4a9295ae.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/646235.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/9040992.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/712813.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb8a5ea-7ba6-4ae3-88d7-61a72717c3e5/68164694027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d34b78f-fea3-421a-9e81-7e9af2d3ab02/5015094988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0999308-ae01-4cd1-8c56-97ba4a240c85/45024326170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cab008-14ea-4ea9-901f-eba36367433e/dogavepajuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8006/7488/files/hooked_on_phonics_learn_to_read.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1180/0729/files/white_sushi_fortnite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6700/2020/files/practicing_radical_acceptance_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3500/2533/files/runescape_the_brink_of_extinction_quick_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7122/3991/files/22660654657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7966/6331/files/46746551854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19751c14-10dc-45f5-a6d9-132c587c55b6/kufowimolor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37fb5293-fd43-4b0b-a603-fab7eab9003d/bedoperuxujul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b879f742-ced0-4576-af4e-2802e11d8db9/wazonikedaxazewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14a33f94-bc6c-4d62-933e-49ac38f7130b/67348100741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d38f6a03-3c23-4220-a9c8-b4c8b9e3d3cf/bobizirudedojixesuvosane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0795/7400/files/realidades_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7622/6724/files/national_scribble_day_2020.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_off00006e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8D 5704 bytes
SHA-256: 0f29edb899c4fbb5762e6538a25fe82cda2fac47b6a5cb3c01eea62a9a09672d
font_01_sfnt_off000081e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E0 10100 bytes
SHA-256: 8c4939c23067842fe29b596087c1ae22757c30973c4538ba9a35fbb01080c8ba

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