Malicious PDF — malware analysis report

Static analysis result for SHA-256 e681d5d659d1d14f…

MALICIOUS

PDF

46.7 KB Created: 2020-08-13 21:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2044db343db29df1286f4d76a2a28ac2 SHA-1: 2b85ea4a684315d0e3168159905373e4c65ef589 SHA-256: e681d5d659d1d14f2de0a01c8e9af4525dc9585af8c2b3423b0f04faf592fe7a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Iccube data analysis reporting' and the malicious URL, suggesting a lure. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to malicious infrastructure via a deceptive document.

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.cc/pify?keyword=iccube+data+analysis+reporting
    • http://files.myoridefitness.com/uploads/1/3/2/6/132696111/nilegeb_junov_bufibax.pdf
    • http://bukala.intimatelyyoursweddings.com/uploads/1/3/1/3/131380005/galutagifuwomu_limuvonozixa_ponelulezemumo.pdf
    • http://files.jetbossphotos.com/uploads/1/3/1/8/131871555/nexoxun.pdf
    • http://files.theclimbingdietitian.com.au/uploads/1/3/1/6/131607075/93bd99fda3fbf.pdf
    • http://sezek.kamibeckford.com/uploads/1/3/0/8/130815017/3604397.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5032/files/amumu_jungle_path.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/cabildo_abierto_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/interview_essay_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/jilub.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/milikefasozulinusogadiwak.pdf
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/82672083767.pdf
    • https://cdn.shopify.com/s/files/1/0454/1526/8520/files/cancer_de_pancreas_tratamiento_nutricional.pdf
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/adobe_acrobat_scanned_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/arabela_audio_recorder.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/manual_wood_splitter.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/29439214366.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/sinhala_bana_katha_free_download.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073aa.bin
a4413793e745eda6324168d9ef5b5dfb1c6b7fddaa06632173bddd834b891ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AA 5420 bytes
font_01_sfnt_off0000861b.bin
8af14f440dd26d71585c78c107fae02edbb56a7f3df606ffa38721b830d3b194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861B 11992 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.